THIRD DAY.
_Section_ I.--THE SEA.
Water and land separated -- Formation of the sea -- Its
restrictions -- Extent -- Depth -- Composition -- Saltness
-- Motion -- Tides -- Four states of water -- Circulation --
Religious improvement.
On the _third day_, the earth was drained, and the waters, which before
covered its surface, were gathered into copious receptacles, and called
seas. God said, “Let the waters under the heaven be gathered into one
place, and let the dry land appear; and it was so. And God called the
dry land Earth; and the gathering together of the waters called he
Seas.” The almighty Creator proceeds to separate, put in order, and
control the element nearest to _light_ and _air_ in quality and use,
and, although not elastic, yet of great power. Probably the air was
used by him as the great agent in gathering the waters into one place.
Thus, instead of the confusion, which existed when the earth and the
water were mixed in one great mass, there is now order; and by their
separation each is rendered useful: the earth affording a habitation
and support for man and the various orders of land animals; and the
water forming an abode for the numerous tribes of living creatures
adapted to subsist in that liquid element.[74]
Previous to this arrangement, the water, being a pure element, was
above the earth. Thus the Psalmist, “Thou coveredst it with the deep
as with a garment: the waters stood above the mountains,” so that they
did not appear. “At thy rebuke they fled; at the voice of thy thunder
they hasted away.” At the omnipotent word they started back, and shrunk
away, says Bishop Patrick; like an affrighted slave at the thunder
of his master’s threatenings, if his commands are not obeyed. They
gathered themselves in those places where they now are, which by Moses
are called seas; and there God shut them up, confining them that they
might not return to cover the earth. God “brake up,” for the reception
of the waters, his “decreed place,” that vast concave or hollow in the
earth; “and set bars and doors,” banks and shores, the weak sand to
control this element, which, however it roar and struggle, it cannot
pass.
It is wonderful that the sea, which has a natural disposition, from its
being a purer and lighter element, to be above the earth, should not
overflow it; but the amazing power of Omnipotence retains it within its
prescribed limits. For he has pronounced, “Hitherto shalt thou come,
but no further; and here shall thy proud waves be stayed.” As if he had
said, Though thy tides flow with mighty strength, though the swelling
billows of thy pride (so the original) rise high in a storm, and dash
against the shore with impetuous force and overwhelming rage, yet here
shall they stop: though they roar and foam, as if irritated at the
opposing strand, yet dare not to approach beyond those limits to thee
assigned; but, obedient to thy Lord and Master, submissively retire.
Here we see the power and dominion of the supreme Being in the kingdom
of nature, whose sway the sea is subject to! Our preservation from its
threatening destruction, by the continual restrictions it is under, is
a perpetual expression of Divine goodness and mercy, and should induce
all men to live always in the reverential fear of God. “Fear ye not
me? saith the Lord: will ye not tremble at my presence, which have
placed the sand for the bound of the sea, by a perpetual decree, that
it cannot pass; and though the waters thereof toss themselves, yet they
cannot pass over it.”
If we look upon the map of the world, we shall find that the ocean
occupies a considerably greater surface of the globe than the land
is found to do. Although the ocean, properly speaking, is but one
extensive sheet of water, continued over every part of the globe
without interruption; and although no part is divided from the rest,
yet geographers have distinguished it by different names, as the
Atlantic or Western Ocean; the Northern, Southern, Pacific, Indian,
and German Oceans. In this vast receptacle, almost all the rivers of
the earth ultimately terminate. And yet these vast and inexhaustable
supplies do not seem to increase its stores; for it is neither
apparently swelled by their tribute, nor diminished by their failure;
it continues constantly the same. Indeed, the quantity of water of
all the rivers and lakes in the world is nothing compared to that
contained in this prodigious reservoir. And some natural philosophers
have carried their ideas on this subject so far as to assert, in
consequence of certain calculations, that, if the bed of the sea were
empty, all the rivers of the world flowing into it with a continuance
of their present stores, would take up at least 800 years to fill it
again to its present height.[75]
To ascertain the _depth_ of the sea has been found impracticable,
both on account of the numerous experiments which it would be found
necessary to make, and the want of proper instruments for that purpose.
Beyond a certain depth the sea has hitherto been found unfathomable;
and though several methods have been contrived to obviate this
difficulty, none of them has completely answered the purpose. We know
in general that the depth of the sea increases gradually as we leave
the shore; but if this continued beyond a certain distance, the depth
in the middle of the ocean would be prodigious. Indeed, the numerous
islands every where scattered in the sea demonstrate the contrary,
by showing us that the bottom of the water is unequal like the land,
and that so far from uniformly sinking, it sometimes rises into lofty
mountains. If the depth of the sea be in proportion to the elevation
of the land, as has been generally supposed, its greatest depth will
not exceed five or six miles; for there is no mountain six miles
perpendicular above the level of the sea. The sea has never been
actually sounded to a greater depth than a mile and 66 feet; every
thing beyond that, therefore, rests entirely upon conjecture and
analogical reasoning, which, in this case, are in no wise conclusive.
Along the coasts, where the depth of the sea is generally well known,
it has always been found proportioned to the height of the shore; when
the coast is high and mountainous, the sea that washes it is deep;
when, on the contrary, the coast is low, the water is shallow. Whether
this analogy holds at a distance from the shore, experiments alone can
determine.
Water is an uninflammable fluid, says Dr. O. Gregory, and, when pure,
is transparent, colorless, and void of taste and smell. Mr. Cavendish
made a discovery that it is formed by the union of _hydrogen_ and
_oxygen_. It may, therefore, be considered as _oxide of hydrogen_:
oxygen and hydrogen appearing to unite, only in that certain proportion
of which water is the result. In 1798, (observes Mr. Parkes) Mr. Sequin
made a grand experiment for the composition of water. He expended no
less than 25,582 cubic inches (or nearly two hogsheads) of inflammable
air, and 12,457 of vital air. The first weighed 1,039 grains, and
the second 6,210, amounting to 7,249 grains, and the water obtained
amounted to 7,245 grains, or about three-fourths of a wine pint. The
loss was only four grains. Another experiment was afterwards made
by Le Fevre, in which nearly two pounds and a quarter of water was
produced.
The sea water contains a quantity of _salt_, but not in the same
proportions every where. In the torrid zone, where otherwise, from the
excessive heat, it would be in danger of putrefaction, the water is
found most salt; as we advance northward its briny quality diminishes,
till at the poles it is nearly gone altogether. Under the line,
Lucas found that the sea comprised a seventh part of solid contents,
consisting chiefly of sea-salt. At Harwich, he found it yielded 1-25 of
the same matter. At Carlscroon, in Sweden, it contains 1-30 part, and
on the coast of Greenland a great deal less. This gradual diminution
of saltness from the equator to the pole, is not, however, without
particular exceptions. The Mediterranean sea contain 1-22 of the
sea-salt, which is less than the German sea contains. The saltness of
some seas, or of particular parts of the same seas, may be increased,
as Mr. Boyle intimates, from rocks and other masses of salt, either at
the bottom of the sea, or dispersed near their shores.
This phenomenon of the sea perplexed the philosophers before the time
of Aristotle, and surpassed even the great genius of that philosopher.
Father Kircher, after having consulted three and thirty authors
upon the subject, could not help remarking, that the fluctuations
of the ocean itself were scarcely more various than the opinions
concerning the origin of its saline impregnation. Bernadine Gomesins,
(observes Bishop Watson) about 200 years ago, published an ingenious
treatise on salt: in this treatise, after reciting and refuting the
opinions of Empedocles, Anaxagoras, and Aristotle, on the subject in
question, he proposes his own; wherein he maintains, that the sea was
originally created in the same state in which we at present find it,
and impregnated, from the very first, with the salt which it contains.
Indeed, we cannot account for the general saltness of the sea from
second causes; hence we must suppose it has had this property from
the creation. Naturalists assure us, that, though some few species of
fishes thrive in fresh water, and some others live alternately in fresh
and salt, yet by far the greatest number cannot exist out of the sea;
which is a proof that the sea was at the creation impregnated with salt.
The saltness of the sea has been considered by some as a peculiar
blessing from Providence, in order to keep so great an element pure
and wholesome: but facts prove that this property is not capable of
preserving it from putrefaction. Sir Robert Hawkins, one of our most
enlightened navigators, gives an account of a calm, in which the sea
continuing for some time without its usual motion, began to assume a
very formidable appearance. “Were it not (says he) for the moving of
the sea, by the force of winds, tides, and currents, it would corrupt
all the world. The experiment of this I saw in the year 1590, lying
with a fleet about the islands of Azores, almost six months; the
greatest part of the which time we were becalmed. Upon which all the
sea became so replenished with various sorts of gelies, and forms of
serpents, adders, and snakes, as seemed wonderful; some green, some
black, some yellow, some white, some of divers colors, and many of
them had life; and some there were a yard and a half and two yards
long; which had I not seen, I could hardly have believed. And hereof
are witnesses all the companies of the ships which were then present;
so that hardly a man could draw a bucket of water clear of some
corruption. In which voyage, towards the end thereof, many of every
ship fell sick, and began to die apace. But the speedy passage into
our country was a remedy to the crazed, and a preservative for those
that were not touched.”[76] Mr. Boyle informs us, that he once kept a
quantity of sea water, taken from the English channel, for some time
barrelled up; and, in a few weeks, it began to acquire a fetid smell.
He was also assured by one of his acquaintance, who had been becalmed
for about fourteen days in the Indian ocean, that the water, for want
of motion, began to stink; and, that had the calm continued much
longer, the stench would probably have poisoned him. It is the motion,
therefore, and not the saltness of the sea, that preserves it in its
present state of salubrity.[77]
The sea has three kinds of motion: the _first_ is that undulation
which is occasioned by the wind. This motion is evidently confined to
the surface; the bottom, even during the most violent storms, remains
perfectly calm. Mr. Boyle has remarked, from the testimony of several
divers, that the sea is affected by the winds to the depth only of six
feet. It would follow from this, that the height of the waves above
the surface does not exceed six feet; and that this holds, in the
Mediterranean sea at least, we are informed by the Compte de Marsigli;
though he also sometimes observed them, during a very violent tempest,
rise two feet higher.
The _second_ kind of motion is that continual tendency which the whole
water in the sea has towards the west. It is greater near the equator
than about the poles; and, indeed, cannot be said to take place at all
in the northern hemisphere beyond the tropic. It begins on the west
side of America, where it is moderate; hence that part of the ocean has
been called _Pacific_. As the waters advance westward, their motion is
accelerated; so that, after having traversed the globe, they strike
with great violence on the eastern shore of America. Being stopped
by that continent, they turn northward, and run with considerable
impetuosity in the Gulf of Mexico; from thence they proceed along
the coast of North America, till they come to the south side of the
great bank of Newfoundland, when they turn off, and run down to the
Western Isles. This current is called the _Gulf stream_. It was first
accurately described by Dr. Franklin, who remarked also, that the
water in it having been originally heated in the torrid zone, cools so
gradually in its passage northward, that even the latitude might be
found in any part of the stream by means of a thermometer. This motion
of the sea westward has never been explained: it seems to have some
connection with the trade-winds, and the diurnal revolution of the
earth upon its axis.
The _third_, and most remarkable motion of the sea, is the tide; which
is a regular swell of the ocean every 12 hours, accounted for from the
principal of gravitation. The sagacious Kepler long ago conjectured,
that the earth and moon, and every particle of them, mutually gravitate
towards each other, and are the cause of the tides. If, says he, the
earth ceased to attract its waters towards itself, all the water in
the ocean would rise and flow into the moon: the sphere of the moon’s
attraction extends to our earth, and draws up the water. This, at that
time, was mere conjecture; for Sir Isaac Newton was the first who
clearly pointed out the cause of this phenomenon. On the shores of the
ocean, and in bays, creeks, and harbors, which communicate freely with
it, the waters rise above their mean height twice a day, and as often
sink below it, forming what is called a _flood_ and an _ebb_, a _high_
and _low water_. It has been stated, that in the middle of the sea the
tide seldom rises higher than one or two feet; but, on the coast, it
frequently reaches to the height of 45 feet, and, in some places, even
to more. At Plymouth, it is sometimes 21 feet between the greatest and
least depth of the water in the same day, and sometimes only 12 feet.
When the sun and moon act conjointly on the tides, which is at the
change and full of the moon, they are stronger and run higher than at
other times, and are called _spring tides_; but when the sun and moon
are 90 degrees apart, their attractive powers, being in opposition to
each other, occasion the tides to be weaker and lower than at other
times, and these are called _neap tides_. The word _neap_ is derived
from the Saxon; it signifies low, decrescent, and is used only of the
tide. These different heights of tide are observed to succeed each
other in a regular series, diminishing from the greatest to the least,
and then increasing from the least to the greatest, according to the
age and situation of the moon.
“The moon turns ocean in his bed,
From side to side, in constant ebb and flow,
And purifies from stench his watery realms.”
Sir Isaac Newton calculated the attractive powers of the sun and moon
on the tides, and found the attraction of the latter to be about three
times greater than that of the former.
Water is found to exist in four states: namely, solid, or ice;
liquid, or water; vapor, or steam; and in a state of composition
in other bodies. The younger Lemery observes, that ice is only the
re-establishment of the parts of water in their natural state;
that the mere absence of fire is sufficient to account for this
re-establishment; and that the fluidity of water is a real fusion, like
metals exposed to the fire; differing only in this, that a greater
quantity of fire is necessary to the one than the other.
Underneath the poles, water is always solid; there it is similar to the
hardest rocks, and may be formed by the chisel of the statuary like a
stone. The following circumstance, noticed by Bishop Watson, will show
the solidity that water is capable of acquiring when divested of a
large portion of caloric. It is related that at the whimsical marriage
of Prince Gallitzen, in 1739, the Russians applied ice to the same
purposes as stone. A house, consisting of two apartments, was built
with large blocks of ice; and the icy cannon, which were fired in honor
of the day, performed their office more than once without bursting.
During the severe winter of 1740, observes M. de Bomare, a palace of
ice, 52 feet long, 16 wide, and 20 high, was built at Petersburgh,
according to the most elegant rules of art. The river Neva afforded the
ice, which was from two to three feet thick, blocks of which were cut
and embellished with various ornaments. When built up, the different
parts were colored by sprinkling them over with water of various tints.
Six cannons, made of and mounted with ice, with wheels of the same
matter, were placed before the palace; and a hempen bullet was driven
by one of these cannons, in the presence of the whole court, through
a board two inches thick, at the distance of sixty paces. Cowper
remarks,--
“No forest fell,
Imperial mistress of the fur-clad Russ,
When thou wouldst build--no quarry sent its stores
T’ enrich thy walls; but thou didst hew the floods,
And make thy marble of the glassy wave.
Silently as a dream the fabric rose,
Ice upon ice; the well-adjusted parts
Were soon conjoin’d; nor other cement ask’d
Than water interfused to make them one.
Lamps gracefully disposed, and of all hues,
Illumin’d ev’ry side. Long wavy wreaths
Of flowers, that feared no enemy but warmth,
Blush’d on the pannels, which were once a stream,
And soon to slide into a stream again.”
In the most northern part of the Russian territory, the cold is
sometimes sufficient to freeze mercury, or 72 degrees below the
freezing point of water.[78] It is so intense in some seasons, that the
poor inhabitants cannot venture out of their miserable huts but at the
hazard of their lives.
“There, through the prison of unbounded wilds,
Barr’d by the hand of nature from escape,
Wide roams the Russian exile. Nought around
Strikes his sad eye but deserts lost in snow,
And heavy loaded groves, and solid floods,
That stretch athwart the solitary vast
Their icy horrors to the frozen main.”
In Iceland and Germany the thermometer frequently falls to zero, which
is 32 degrees below the freezing point. At Hudson’s Bay it has been
known to sink even 50 degrees lower. When stones or metals, which have
been exposed to such degrees of cold, are touched by the tongue, or
the softer parts of the human body, they absorb the heat from those
parts with such rapidity, that the flesh becomes instantly frozen and
mortified, and the principle of life in them is extinguished. Some
French academicians, who made a journey to the northern end of the
Baltic, and wintered under the polar circle, found it necessary to use
all possible precautions to secure themselves from the dreadful cold
which prevailed. They prevented, as much as possible, the entrance of
the external air into their apartments; and if at any time they had
occasion to open a window or a door, the humidity of their breath,
confined in the air of the house, was condensed and frozen into a
shower of snow; their lungs, when they ventured to breathe the cold
air, felt as if they were torn asunder; and they often heard the
rending of the timber around them by the expansive power of the frost
on the fluid in its pores. In this terrible cold the thermometer
fell to 33 below zero.[79] The most intense cold ever known in the
neighborhood of London was on December 25th, 1796, when the thermometer
indicated 2 below zero.
The ice at each pole of the earth forms an immense cupola, the arch of
which extends some thousand miles over the continents; the thickness
of which, beyond the 60th degree of latitude, is several hundred
feet. Navigators have assigned to detached masses, which are met with
floating at sea, an elevation of from 1,500 to 1,800 feet.[80] There
can be no doubt but that the thickness of these cupolas of ice is much
greater nearer the poles; for astronomy sometimes presents in the
heavens so vast an image of them, that the rotundity of the earth seems
to be considerably affected thereby. Captain Cook could never approach
nearer the south pole, where there is no land, than the 70th degree of
latitude; that is, no nearer than 1,500 miles; and it was only under
the favor of a bay, that he was permitted to advance even so far.[81]
All the results of observations made by navigators, concur in proving
that the temperature of the sea decreases according to the depth; and
that the deepest gulfs are continually covered with ice, even under the
equator. From a late memoir by M. Perron, some say, there is reason to
believe that these mountains of ice at the poles, which have hitherto
impeded the progress of European navigators, have been detached from
the depths of the sea to float at the surface.[82]
When water is converted into ice, it is lighter[83] than when in a
fluid state, which is a circumstance of great importance. Galileo
was the first who observed this. Ice consequently floats upon water,
its specific gravity being to that of water as eight to nine. This
rarefaction seems to be owing to the air-bubbles produced in water
by freezing; and which, being considerably larger in proportion to
the water frozen, render the body so much specifically lighter: these
air-bubbles, during their production, acquire a great expansive power,
so as to burst the containing vessels though ever so strong.
[The specific weight of ice is known to be less than
that of water. Our author assigns a reason not entirely
satisfactory. We must admit that the freezing of the upper
stratum of water, although it may _include_ the air which was
in the water frozen, yet, _it does not expel the air from the
subjacent volumes of water_. Hence the air in the water below
will balance the effects of the air included in the ice.
It is a singular fact, and is regarded as a deviation from
the general rule, that water _expands_ in volume in proportion
as its temperature is _reduced below_ 40° Fahrenheit. It also
expands by raising its temperature above this degree.
The _expansion_ of the volume then, and not the enclosed
air bubbles, is the cause of water being specifically lighter
when converted into ice. But it remains to account for its
expansion by a _reduction_ of temperature.
This is a difficult question. It seems most probable
that this expansion is owing to a peculiar arrangement, of
the particles of water, in the act of crystallization, i.e.
_freezing_. M. Mairan found that the particles of water, in
the act of freezing, arranged themselves constantly at an angle
of 60°, and by this arrangement _increased the bulk_ of the
water thus crystallized.
It is obviously a mistake to attribute the “expansive
power” of freezing to the force of the inclosed air-bubbles:
because the reduction of temperature would reduce this supposed
expansion of the inclosed air. The true cause of the expansion
of ice is supposed above, in the arrangements of the particles
of water in the process of crystallization.
The _power_ which disposes these particles to arrange,
_increases with the reduction of temperature_, until the
disposing power becomes sufficiently great to force every
impediment to the inclination to arrange. Hence the strongest
vessels burst in the process of freezing.
The impediments may restrain the accomplishment of the
arrangement of the particles for a time, but the disposing
power will overcome them, if the reduction of temperature go
on; and when they are overcome _suddenly_, the crystallization
will take place _instantly_. Hence the sudden rending of
vessels, trees, mountain rocks, &c, upon the sudden congelation
of water.
Even when there is no cause to impede crystallization, it
is well known that the _preparation_ to crystallize, or freeze,
may be observed in the liquid; the particles seeming to be
_preparing_ to arrange themselves; and then, at a given stage
of the preparation, they take their places _suddenly_, and thus
we have ice.
This consummation may be retarded, or hastened by
_artificial_ means. Water may be reduced to a lower temperature
by being kept _still_, than when _agitated_. And if it be
cooled down to the lowest possible temperature, _without
congealing_, it may remain fluid at that temperature for a long
time. But if the vessel be _suddenly struck_; or the surface
of the water _touched with a piece of ice_; or _a large piece
of cold metal be brought in contact with the outside of the
vessel; the water will instantly crystallize or freeze in
beautiful crystals_.
These facts establish the above theory. Because, 1. there
is no increased reduction of temperature effected, by striking
the vessel, touching the surface of the water with ice, or the
outside of the vessel with cold metal. 2. There is every reason
to conclude these things _commence the motion_ in the water,
which is at rest, balanced between an inclination to be at
rest, and an inclination to move in arranging the particles;
the motion communicated overcomes this balance in favor of
the disposition to crystallize, and hence the water freezes
instantly, with an expansion of volume.]
It is owing to the _expansion_ of water in freezing, that rocks
and trees are often split during intense frosts. According to the
calculations of the Florentine academicians, a spherule of water, only
one inch in diameter, expands in freezing with a force superior to the
resistance of 13½ tons weight. Major Williams also attempted to prevent
this expansion; but during the operation the iron plug which stopped
the orifice of the bomb-shell containing the freezing water, and which
was more than two pounds weight, was projected several hundred feet
with great velocity; and in another experiment the shell burst. This
property of water is taken advantage of in splitting slate. At Colly
Western, the slate is dug from the quarries in large blocks: these are
placed in an opposite direction to what they had in the quarry, and the
rain is allowed to fall on them: it penetrates their fissures, and the
sharp frost freezes the water, which, expanding with its usual force,
splits the slate into thin layers.[84]
M. Mairan, in a dissertation on ice, attributes the increase of its
bulk chiefly to a different arrangement of the parts of the water
from which it is formed; the icy skin on the water being composed
of filaments, which according to him, are found to be constantly
and regularly joined at an angle of 60°; and which, by this angular
disposition, occupy a greater volume than if they were parallel. He
found the augmentation of the volume of water by freezing, in different
trials, a 14th, an 18th, a 19th, and when the water was previously
purged of air, only a 22d part: that ice, after its formation,
continues to expand by cold; for, after water had been frozen to some
thickness, the fluid part being let out by a hole in the bottom of the
vessel, a continuance of the cold made the ice convex; and a piece of
ice, which was at first only a 14th part specifically lighter than
water, on being exposed some days to the frost, became a 12th part
lighter. To this cause he attributes the bursting of ice on ponds.
Several philosophers have been very desirous to experience how far the
expansive force of freezing water might be carried. “An iron gun of an
inch thickness,” says M. Haüy, “filled with water and exactly closed,
having been exposed by Buot to a strong frost, was found to be burst
in two places at the end of twelve hours. The Florentine philosophers
were able, by means of the same cause, to burst a sphere of very thick
copper; and Musschenbroek, having calculated the effort which would
occasion the rupture, found that it would be capable of raising a
weight of 27,720 pounds.”
“Colonel E. Williams, of the Royal Artillery, when at Quebec, in the
years 1794 and 1795,” says Dr. O. Gregory, “made many experiments.
He filled all sizes of iron bomb-shells with water, then plugged the
fusee-hole close up, and exposed them to the strong freezing air of the
winter in that climate; sometimes driving in the iron plugs as hard as
possible with a sledge-hammer: and yet, though they weighed near three
pounds, they were always forced out by a sudden expansion of the water
in the act of freezing, like a ball impelled by gunpowder, sometimes
to the distance of between 400 and 500 feet: and when the plugs were
screwed in, or furnished with hooks and barbs, by which to lay hold of
the inside of the shell, so that they could not possibly be forced
out; in that case the shell was always split in two, though its
thickness of metal was about an inch and three quarters. It is further
remarkable, that through the circular crack, round about the shells
where they burst, there stood out a thin film or sheet of ice, like a
fin; and in the cases where the plugs were projected by freezing water,
there suddenly issued from the fusee-hole a bolt of ice of the same
diameter, and stood over it sometimes to the height of eight inches
and a half. Hence we need not be surprised that excessive frost should
cause the ice to split rocks, and other solid substances.”[85]
It was necessary for the preservation of the world, that water should
in this instance be subjected to a law different from that of other
substances which change from fluid to solid. The wisdom and goodness
of the great ARTIFICER of the world will manifest itself in this
arrangement, if we consider what would have been the consequences had
water been subject to the general law, and like other fluids, become
specifically heavier by the loss of its caloric. In winter, when the
atmosphere became reduced to 32°, the water on the surface of our
rivers would have sunk as it froze; another sheet of water would
have frozen immediately, and sunk also; the ultimate consequence of
which would have been, that the beds of our rivers would have become
repositories of immense masses of ice, which no subsequent summer could
unbind; and the world would shortly have been converted into a frozen
chaos. How admirable the wisdom, how skilful the contrivance, that by
subjecting water to a law contrary to what is observed by other fluids,
as it freezes it becomes specifically lighter, and, swimming upon the
surface, performs an important service by preserving a vast body of
caloric in the _subjacent_ fluid from the effects of the surrounding
cold, ready to receive its own accustomed quantity on the first change
of the atmosphere?[86]
Owing to the distance of this globe from the sun, and to the vast
mountains of ice at the poles, the atmosphere over a large portion of
the earth is at times reduced to so low a temperature, that, if it
were not for a wise provision of nature, all vegetable life must be
destroyed. Caloric has always a tendency to equilibrium; therefore, if
the temperature of the air be lowered, the earth cools in proportion:
but when the atmosphere is reduced to 32°, the water which it held
in solution becomes frozen, and precipitates in the form of snow on
the earth, covering it as with a carpet, and thereby preventing the
escape of that caloric which is necessary for the preservation of
those families of vegetables that depend on it for their support and
maturity. Be the air ever so cold, the ground, thus covered, is seldom
reduced below 32°, but is maintained equably at that temperature for
the purpose above mentioned.[87] Homer has described a shower of snow,
and its extensive effects, in a fine strain of poetry.
“In Winter’s bleak uncomfortable reign,
A snowy inundation hides the plain:
Jove stills the winds, and bids the skies to sleep;
Then pours the silent tempest thick and deep:
And first the mountain tops are covered o’er,
Then the green fields, and then the sandy shore;
Bent with the weight the nodding woods are seen,
And one bright waste hides all the works of men:
The circling seas alone, absorbing all,
Drink the dissolving fleeces as they fall”--POPE.
Snow is furnished with the power of absorbing and combining with a
large portion of oxygen, which gives it its fertilizing property. The
snow melting and penetrating into the softened earth communicates to it
oxygen, and this oxygen promotes the germination of seeds. The carbon
of the earth combining with the oxygen, is converted into carbonic
acid, and thereby acquires more solubility; while the water contributes
to excite that activity which had been rendered dormant in the roots
by the cold. It is this property of carbon which deprives water of the
superabundant oxygen that would render it prejudicial to health, and
unfit for the purposes of life. Thus what would otherwise be injurious
to us is improved by the ground, and gives at the same time power and
activity to the mould. How multiplied are those means which infinite
wisdom and goodness employ for the preservation of the productions of
Nature![88]
Ice at 32° must absorb 140° of caloric before it can become a fluid;
or such a quantity as would raise a body of water of equal bulk with
itself from 32° to 172°. For instance: “Take any quantity by weight of
ice or snow at 32°, and mix it with an equal weight of water heated
exactly to 172°. The snow instantly melts, and the temperature of
the mixture is still only at _thirty-two_ degrees. Here the water is
cooled 140°, while the temperature of the snow is not increased at
all; so that 140° of caloric have disappeared. They must have combined
with the snow; but they have only melted it, without increasing its
temperature. Hence it follows irresistibly that ice, when converted
into water, absorbs and combines with 140° of caloric. Water then,
after being cooled down to 32°, cannot freeze till it has parted with
140° of caloric; and ice, after being heated to 32°, (which is the
exact freezing point), cannot melt till it has absorbed 140° more of
caloric. This is the cause of the extreme slowness of these operations.
There can be no doubt, then, but water owes its fluidity to its latent
caloric, and that its caloric of fluidity is 140°.”[89] And all this
arrangement in nature, connected with the operation of these elements,
is immediately under the control and direction of the infinitely wise
and almighty Creator of the universe. “He sendeth forth his commandment
upon earth: his word runneth very swiftly. He giveth snow like wool:
he scattereth the hoar-frost like ashes. He casteth forth his ice like
morsels: who can stand before his cold? He sendeth out his word, and
melteth them: he causeth his wind to blow, and the waters flow.”
Drops of rain, falling through a cold region of the atmosphere, are
frozen and converted into hail; and thus the _hail_ is produced by
_rain_. When it begins to fall, it is _rain_; when it is falling, it
is converted into _hail_; so that it is literally true, that _it rains
hail_. The further a hail-stone falls, the larger it generally is;
because, in its descent, meeting with innumerable particles of water,
they become attached to it, are also frozen, and thus its bulk is
continually increasing till it reaches the earth.[90] A storm of hail
fell near Liverpool, in Lancashire, in the year 1795, which greatly
damaged the vegetation, broke windows, &c, &c. Many of the stones
measured five inches in circumference. Dr. Halley mentions a similar
storm of hail in Lancashire, Cheshire, &c, April 29, 1697, that for
sixty miles in length, and two miles in breadth, did immense damage,
by splitting trees, killing fowls and all small animals, knocking
down men and horses, &c, &c. Mezeray, in his History of France, says,
that in Italy, in 1510, there was for some time a horrible darkness,
thicker than that of night; after which the clouds broke into thunder
and lightning, and there fell a shower of hail-stones which destroyed
all the beasts, birds, and even fish of the country. It was attended
with a strong smell of sulphur, and the stones were of a blueish color,
some of them weighing one hundred pounds weight. The Almighty says to
Job--“Hast thou seen the treasures of the hail, which I have reserved
against the time of trouble, against the day of battle and war.” While
God has such artillery at his command, how soon may he desolate a
country, or a world![91]
The aqueous fluid is in continual circulation. The constant _round_
which it travels, says Dr. Paley, and by which, (without suffering
either adulteration or waste,) it is continually offering itself to
the wants of the habitable globe, is much to be admired. From the sea
are exhaled, by the heat of the sun, into the air, those vapors which
are there condensed into clouds: these clouds are dissolved into rain
and dew, or into snow and hail, which are but rain congealed, by the
coldness of the air, and descend in showers, which, penetrating into
the crevices of the hills, supply the springs: which springs flow in
little streams into the valleys; and there uniting, become rivers,
which rivers, in return, feed the ocean. So there is an incessant
circulation of the same fluid; and not one drop probably more or less
now than there was at the creation. A particle of water takes its
departure from the surface of the sea, in order to discharge certain
important offices to the earth: and, having executed the service which
was assigned to it, returns to the bosom which it left.[92] Thus, as
one of the greatest of naturalists says, “All the rivers run into the
sea; yet the sea is not full: unto the place from whence the rivers
come, thither they return again.”
Water, when taken up by the atmosphere, is not in an aqueous state, but
is converted into vapor by the efficiency of heat, and then combines
with more than five times the quantity of caloric than is required to
bring ice-cold water to a boiling heat, and occupies a space 800 times
greater than it does when in the form of water. A large portion of the
matter of heat combining chemically with water, renders it specifically
_lighter_; which is the cause of its rising and mixing with the
atmosphere. The waters on the face of the earth would be dissipated in
vapor by a small degree of heat, if we had no atmosphere. Under the
pressure of the atmosphere water boils at 212°, but in vacuo it boils
when heated only to 67°. On the contrary, if additional pressure be
given to water by a Papin’s digester, it may be heated to 400°, without
producing ebullition. However long we boil a fluid, in an open vessel,
we cannot make it in the smallest degree hotter than the boiling
point.[93] When arrived at this point, the vapor absorbs the heat, and
carries it off as fast as it is generated. When water is received into
the atmosphere, if the air be warm, it becomes so far changed by its
union with the matter of heat as to be perfectly invisible. In this
state it occupies a space 1,400 times greater than its ordinary liquid
state.
After vapor has remained some time in the atmosphere, it becomes in a
measure condensed; and the particles of water of which it is composed
unite, and form hollow vesicles, which accumulate together and produce
clouds. How this is effected, those who have attentively considered
the subject are not agreed. Dr. Thomson, after well investigating the
matter, concludes, from all the facts, that “the formation of clouds
and rain cannot be accounted for by a single principle with which
we are acquainted.” It is, however, says Mr. Parkes, probable that
_electricity_ alone is the primary cause. Saussure conjectures that it
is the electrical fluid which surrounds these vesicles, and prevents
them from dissolving in the air. And the idea of the formation of
clouds by the agency of electricity was mentioned by Volta, and also by
Dr. Franklin.
[It is allowed by all, that clouds are formed by the
aqueous vapors which are held suspended, or in solution, by
the atmosphere. It is not a settled question, whether the air
holds these vapors in solution, or merely suspended; and thus,
keeping the particles asunder, prevents their condensation.
This aqueous vapor is _invisible_ when perfectly in union
with the air. When it begins to separate from the air, it
becomes visible by condensation, in the form of _clouds_,
_mists_, and _fogs_. When it is perfectly separated and
sufficiently condensed it becomes _rain_, and when the
temperature is sufficiently low to freeze the condensed drops,
they become _snow_, or _hail_.
The above process is quite intelligible, but the _agent_ of
this condensation is, perhaps, inexplicable. It is impossible
to solve all the phenomena of the formation of clouds, by
supposing the vapors condensed by a reduction of temperature,
produced by the warmer volumes of clouds rising into the
regions of colder ones. For we know the natural tendency of the
warmer strata of air, from the neighborhood of the earth, is to
rise, with its watery particles, to colder regions. Hence there
would be a constant condensation, which would seem to require a
constant deposition of rain, or mist; or, at least, a constant
accumulation of clouds.
Again: On this theory, the nights would be cloudy and
rainy: as the vapors raised during the day would be condensed
by the superior coldness of the night succeeding. Moreover, it
is well known that great rains fall in very warm weather, and
when a _rise_ of temperature is observed.
These, and other considerations, have induced many persons
to have recourse to _electricity_ to solve this difficult
question, and various observations seem to countenance the
idea that it may be the remote agent of the formation of
clouds, by producing a sudden rarefaction of the air, which
would, of course, produce a sudden reduction of temperature;
the consequence of which would be a rapid condensation of the
watery particles in combination with the air. This condensation
would form clouds, and if sufficiently rapid and extensive, a
fall of rain would ensue.
This supposition is much strengthened by a fact of common
observation, viz: _when clouds are impending over us, but no
rain falling, a sudden shower comes down instantly upon a
flash of lightning._ In this case it is so obvious that the
lightning had an immediate agency, that none can doubt, who
ever observed the phenomenon.
The _electrified_ state of _clouds_, _fogs_, and _mists_,
is considered strong proof in favor of this theory. Clouds are
almost always highly charged with electricity, and sometimes so
highly charged as to become _luminous_, and very destructive.
On the 11th of August, 1772, about midnight, a bright cloud
was observed covering a mountain in the district of Cheribon,
in the island of Java, at the same time several reports were
heard like those of a gun. The people who dwelt upon the upper
parts of the mountain not being able to fly fast enough, a
great part of the cloud, almost three leagues in circumference,
detached itself under them, and was seen at a distance rising
and falling like the waves of the sea, and emitting globes of
fire so luminous, that the night became as clear as day. The
effects of it were astonishing; every thing was destroyed for
seven leagues round; the houses were demolished; plantations
were buried in the earth, and 2,140 people lost their lives.
_Ency. Brit. Article_, CLOUDS.
In another case, October 29th, 1757, in the island of
Malta, a little after midnight, there was seen to the South
west of the city Melita, a great black cloud, which, as it
approached, changed its color, till at last it became like a
flame of fire mixed with smoke. A dreadful noise was heard on
its approach, which alarmed the whole city. It passed over the
port, and came first on an English ship, which in an instant
was torn to pieces, and nothing left but the hulk; part of
the masts, sails, and cordage were carried to a considerable
distance along with the cloud. The small craft were sunk
instantly. It demolished a part of the city, and passed over to
Sicily, but did no injury there as it was previously exhausted.
Several hundred were killed. _Ency. Brit. Article_, CLOUD.]
The principle of evaporation is the primary cause of all rain, mist,
dew, &c. The ocean loses many millions of gallons of water hourly by
evaporation. The Mediterranean alone is said to lose more by it, than
it receives from the Nile, the Tiber, the Rhone, the Po, and all the
other rivers that fall into it. When Dr. Halley made his celestial
observations upon the tops of the mountains at St. Helena, he found
that the quantity of vapor which fell there (even when the sky was
clear) was so great, that his observations were thereby much impeded:
his glasses were so covered with water through the condensation of the
vapors, that he was obliged to wipe them every ten minutes. In order to
determine, with some degree of accuracy, how much water would be raised
in vapor in any space of time, he took a vessel of water salted to the
same degree with that of sea-water, in which he placed a thermometer,
and by means of a pan of coals brought the water to the same degree of
heat as would be produced by the sun in summer: he then affixed the
vessel of water with the thermometer in it, to one end of a pair of
scales, and exactly counterpoised it with weights on the other. Then,
at the end of two hours, he found by the alteration in the weight of
the vessel, that a sixtieth part of an inch in the depth of the water
was gone off in vapor; and therefore, in twelve hours, one-tenth of an
inch would have gone off. From this experiment the Doctor calculates
(in as accurate a manner as the subject will admit of) the quantity of
water raised by evaporation from the Mediterranean Sea, to be at least
five thousand two hundred and eighty millions of tons of water in a
day; and from the river Thames twenty millions three hundred thousand
tons per day, on the average.
This water is conveyed by the winds to every part of the continents:
these it fertilizes in the form of rain, and afterwards supplies the
rivers, which flow again into the sea. In our climate, evaporation is
found to be about four times as much from the vernal to the autumnal
equinox, as from the autumnal to the vernal. Heat facilitates all
solutions; and the greater the difference between the temperature
of the air and the evaporating surface, the greater will be the
evaporation. Bishop Watson found that, even when there had been no rain
for a considerable time, and the earth had been dried by the parching
heat of summer, an acre of ground dispersed into the air above 1,600
gallons of water in the space of twelve hours of a summer’s day. A
little reflection would convince any one of the importance of the
principle of evaporation. Innumerable instances of its use might be
adduced; suffice to add, that without it neither grass nor corn could
be sufficiently void of moisture to lay up for use. Our clothes when
washed could not be dried; neither could a variety of the most common
operations, which conduce much to our comfort and convenience, be
performed without it.
It is evident that water exists in the atmosphere in abundance, even in
the driest seasons, and under the clearest sky. By the experiments of
Saussure, it appears, that a cubic foot of atmospheric air will hold
eleven grains of water in solution. From this property of the air we
derive many advantages. It has a tendency to preserve every thing on
the face of the earth in a proper degree of moisture. It appears, from
the experiments of some aëronauts, that the air is much drier in the
higher regions than it is near the surface of the earth.
When two opposite currents of air meet, of different temperatures,
the vapors are sometimes condensed thereby, and rain ensues. It may
be remarked, that if the temperature of our atmosphere had been 212,
or upwards, rain could never have fallen on the earth; for the water
taken up by evaporation would have been converted into a _permanently_
elastic fluid. Such is the necessity of rain, that it _alone_ not only
affords a proper degree of moisture to the vegetable creation, but
is of service in bringing the soils into a fit state to perform their
office. Dry earth of itself is ineffective; but when _moistened_ it
has the property of decomposing atmospheric air, and of conveying its
oxygen to the roots of those plants which vegetate within it. We are
indebted to Humboldt for the knowledge of this fact. It is impossible
ever to contemplate the various ways in which the different operations
of nature are made to correct and balance each other, without being
struck with the infinite comprehension of the Divine Mind, which could
thus foresee the tendency of every law which it was about to establish.
How many cases are there in which the slightest oversight would have
produced the destruction of the world!
The effects of vapor have furnished a new moving force to mechanics,
says Haüy, which it required no ordinary genius to have created, and to
have measured its energy. This science, during a long time, had only
employed water as a moving force, by availing itself of its natural
course, or by judiciously managing its fall, so as to subject it to the
operation of machines which is regulated by an impulsion continually
renewed. The experiments made upon the force of water reduced to
vapor, gave birth to the idea of applying that vapor so much the more
advantageously to the same purpose, because independently of its
great energy, it may be transported wherever it is called for by the
interests of commerce and industry.
The execution of steam-engines has had, like that of all other
machines, its different epochs, to which successively corresponded new
degrees of perfection. To diminish, as far as possible, the quantity
of vaporisation requisite for the effect in contemplation, and to make
a moderate use of the combustible; to combine with this chief economy
that of substance and of workmanship, by contracting the dimensions of
the pieces without diminishing their utility; to prevent explosions,
by the wisest precautions adopted in the management of an agent whose
power becomes destructive when it is not limited: these are in general
the objects which have fixed the attention of engineers, and have
excited among them a laudable kind of rivalship.[94]
In no invention, either for ingenuity or utility, has modern genius
been more conspicuous than in the invention of the steam-engine.
The amazing power wielded by man, by this means, is just matter
of astonishment and wonder. In no part of the kingdom have these
stupendous machines been brought to greater perfection, either in size
or principle, than in the mining counties of Cornwall and Devon. The
largest ever built has lately been erected at Chacewater mine, in the
county of Cornwall, by Mr. S. Moyle, of that place, and is for size and
efficiency, as well as neatness, without a parallel. This stupendous
machine is equal to 1,010 horses; it works day and night in pumping dry
a mine of 100 fathoms deep, and of a large extent: and the quantity of
water pumped out in one minute, and the column consequently lifted,
is greater than any other machine of the kind ever erected. The whole
reflects the greatest credit on the abilities of the engineer, and
forms an interesting object to all those who are curious in mechanism,
or who may visit the mines of Cornwall.[95]
A very ingenious naturalist suggests the idea, that subterraneous
fire, and steam generated from it, are the true and real causes of
earthquakes. And he thinks the elasticity of steam and its expansive
force, are every way capable of producing the stupendous effects
attributed to earthquakes, when it is considered that this expansive
force of steam is to that of gunpowder as 140 to 5. He also apprehends
that subterraneous fire must, at different times, have existed
universally in the bowels of the earth, and that in union with water,
or by the expansive power of steam, it has produced the immense
continents, as well as the mountains of our globe.[96] There are,
in the Memoirs of the Paris Academy of Sciences for the year 1707,
some observations communicated by Vauban, from which it results that
140 pounds of water converted into vapor, would produce an explosion
capable of blowing up a mass of 77,000 pounds, while 140 pounds of
powder could only produce a similar effect upon a mass of 30,000.
Water would be the purest of all drinks, says Sturm, were it as
absolutely simple body; but on the other hand, its medicinal virtue
would be reduced to nothing. If we consider the manner in which water
nourishes plants, it is easy to presume that it communicates the
nutritious juices which it contains, to men and animals in the same
way. Water is not very nutritive by itself, but being very subtile, it
dissolves the nutritious parts of aliments, is a vehicle for them, and
carries them along into the minutest vessels. It is consequently the
most wholesome drink; and is essentially necessary to men and animals;
and its salutary effects are felt, where all other liquids are found
hurtful to health. “The water of Egypt,” says the Abbé Mascrier, “is
so delicious, that one would not wish the heat to be less, or to be
delivered from the sensation of thirst. The Turks find it so exquisite,
that they excite themselves to drink of it by eating _salt_. It is a
common saying among them, that if Mahomed had drank of it, he would
have besought God that he might never die, in order to have had this
continual gratification. When the Egyptians undertake the pilgrimage of
Mecca, or go out of their country on any other account, they speak of
nothing but the pleasure they shall have, at their return, in drinking
of the waters of the Nile. There is no gratification to be compared to
this: it surpasses, in their esteem, that of seeing their relations
and families. All those who have tasted of this water, allow that they
never met with the like in any other place. When a person drinks of it
for the first time, he can scarcely be persuaded that it is not a water
prepared by art: for it has something in it inexpressibly agreeable and
pleasing to the taste; and it should have the same rank among _waters_,
that _champaigne_ has among _wines_. But its most valuable quality is,
that it is exceedingly salutary. It never incommodes, let it be drank
in what quantity it may: this is so true, that it is no uncommon thing
to see some persons drink three buckets full of it in a day, without
the least inconvenience! When I pass such encomiums on the water of
Egypt, it is right to observe, that I speak only of that of the _Nile_,
which indeed is the only water, drinkable, for their _well-water_ is
detestable and unwholesome. _Fountains_ are so rare, that they are a
kind of prodigy in that country; and as to _rain-water_, that is out of
the question, as scarcely any falls in Egypt.”
* * * * *
Having attended to the situation and properties of water in the world
of nature, we shall now show that by this element is represented the
blessings of Divine grace in the moral or spiritual world. God is
the _fountain of living waters_, ever-living, all-sufficient, and
incessantly flowing; like waters, arising and issuing from a spring,
which continue during the whole year: not like waters that proceed only
from some excess of rain, such as land-floods, or those flowing down
from hills, which in the winter season run in torrents, but in the
heat of summer are dried up and fail. Such uncertain waters are well
expressed by Job--“My brethren have dealt deceitfully as a brook, and
as the stream of brooks they pass away; which are blackish by reason
of the ice, and wherein the snow is hid: what time they wax warm they
vanish: when it is hot they are consumed out of their place. The paths
of their way are turned aside; they go to nothing, and perish. The
troops of Tema looked, the companies of Sheba waited for them. They
are confounded because they had hoped; they came thither, and were
ashamed.” He alludes to those merchants who travelled in companies or
caravans, with beasts of burden, through the deserts of Arabia; who,
having in the winter observed and marked out in certain places on the
road great pools of water, or copious streams locked up in the valleys
by severe frosts; so that, when travelling the same road in summer,
they expected finding water there still to refresh themselves and their
thirsty camels; but, to their great grief and consternation, instead
of pools or brooks of water, found heaps of dry sand, occasioned by
intense heat. But God is a fountain which sends forth streams of
blessings in all seasons, and never fails. The _living waters_ which
proceed from him as their fountain, are not stagnant, or dead, but
running, like those that issue from springs which are never dry, and
possess the most refreshing and invigorating properties.
The element of water is used for washing and purifying the body; so the
operation of Divine grace on the soul removes its moral defilement.
All the purifications by water under the law, were outward expressions
of this inward cleansing. Thus those important words by the prophet
Ezekiel, “I will sprinkle clean water upon you, and ye shall be clean;
from all your filthiness, and from all your idols, will I cleanse you:
a new heart also will I give you, and a new spirit will I put within
you.” Accordingly the Psalmist says, “Thou shalt wash me, and I shall
be whiter than snow.” He also prays, “Create in me a clean heart, oh
God; and renew a right spirit within me.” As purity is necessary for
enjoying communion with God in all his instituted ordinances, he says,
“I will wash mine hands in innocency: so will I compass thine altar,
oh Lord.” Similar language is used in the New Testament. Our Lord said
to Peter, “If I wash thee not, thou hast no part in me.” The apostle
Paul, after mentioning several immoral characters to the Christians at
Corinth, says, “And such were some of you: but ye are washed, but ye
are sanctified, but ye are justified in the name of the Lord Jesus, and
by the Spirit of our God.”
Our Lord gave himself for us, not only that he might redeem us from
all iniquity, but also that he might purify us unto himself a peculiar
people. This cleansing, washing, and purifying the soul from sin, is,
in the Holy Scripture, attributed to the virtual efficacy of his blood.
“The blood of Jesus Christ his Son cleanseth us from all sin.” “Unto
him that loved us, and washed us from our sins in his own blood.”
The primary effect of his blood is the expiation of sin; and, as a
consequence thereof, the remission of it. “This is my blood which is
shed for the remission of sins.” “In whom we have redemption through
his blood, the forgiveness of sins.” Now by the blood of Christ in
these places we are to understand his sufferings, which were completed
in the shedding of his blood on the cross.
* * * * *
_Section_ II.--THE EARTH.
Surface of the Earth -- Mountains -- Fertility of Plants --
Dissemination of Seeds -- Preservation of Plants -- Adaptation
to different Climates -- Number of vegetables -- Succession of
vegetables -- Remarkable Trees -- Sensitive Plants -- Kitchen
vegetables -- Garden flowers -- Religious Improvement.
The dry land and the seas constitute what is called the _terraqueous
globe_; what proportion the superficies of the sea bears to that of the
land, cannot be easily ascertained; but, as one observes, the earth
and the water exist in a most judicious proportion to each other.
According to the most exact calculations, the surface of the earth is
199,512,595 square miles; and that of the sea is to the land as three
to one. There is no certain measurement of the proportion of land and
water which the parts within the polar circles contain. The superficies
of the sea appearing so large, may lead some persons to suppose, that
the proportions between the land and water are not wisely adjusted; and
that had there been less sea and more dry land, this would have been
more adapted to the accommodation and service of mankind. As such a
supposition as this tends to arraign the wisdom of God, so it proceeds
from ignorance of natural philosophy. For, as Dr. Keill asserts, “if
there were but half the sea that now is, there would be also only half
the quantity of vapors; and, consequently, we could have no more than
half so many rivers as there now are, to supply not only all the dry
land we have at present, but half as much more; for the quantity of
vapors which are raised, bears a proportion to the surface whence they
are raised, as well as the heat which raised them. The wise Creator so
prudently ordered it, that the sea should be large enough to supply
vapors sufficient for all the land, which it would not do if it were
less than it now is.”[97] The Scriptures speak of God as making all
things in number, weight, and measure; as proceeding in his works with
the greatest exactness. “He hath measured the waters in the hollow of
his hand, and meted out heaven with a span, and comprehended the dust
of the earth in a measure, and weighed the mountains in scales, and the
hills in a balance.” Those who wish to see this further illustrated,
would do well to consult Ray’s “Wisdom of God manifested in the works
of the Creation,” and his “Physico-theological Discourses.”
The stately mountains, that lift their lofty heads above the clouds,
serve for very beneficial purposes. Does the bold atheist call them
blemishes, and irregularities in the formation of the earth? Surely
he never considered how necessary they are, for arresting the clouds
in their flight, and conveying their waters through imperceptible
channels, till they meet in some common receptacle, whence they burst
out in springs to fertilize the lower grounds, and afford refreshing
streams for man and beast. “This,” says Mr. Halley, “seems to be the
design of the hills, that their ridges, being placed through the midst
of the continents, might serve as it were for alembics, to distil
fresh water for the use of man and beast; and that their heights might
give a descent to those streams to run gently, like so many veins of
the microcosm, to be more beneficial to the creation.” They are, says
Mr. Ray, “for the generation and maintenance of rivers and fountains,
which--on the hypothesis that all proceed from rain water--could not
subsist without them, or but rarely. So we should have only torrents,
which would fail in summer, or in any dry season, and nothing to trust
to, but stagnating water, reserved in pools and cisterns. The great
inconvenience resulting from this I need not take pains to show. I say
that fountains and rivers would be but rare, were there no mountains.
For the whole dry land being but one continued mountain, and ascending
all along from the sea to the mid-land, as is undeniably proved by
the descent of rivers even in plain countries; the water sinking into
the earth, may run under ground, and, according as the vein leads it,
break out in the side of this mountain, though the place, as to outward
appearance, be a plain. There are huge ridges and extended chains of
mountains directed for the most part to run east and west; by which
means they give admittance and passage to the vapors, brought by the
winds from the Atlantic and Pacific oceans; but stop and inhibit their
excursions to the north and south, either condensing them on their
sides into water, by a kind of external distillation; or by straitening
and constipating them, compelling them to gather into drops, or descend
down in the rain.”
After the waters had subsided, the land appeared, dry and fit for
vegetation. “And God said, Let the earth bring forth grass, the herb
yielding seed, and the fruit-tree yielding fruit after his kind,
whose seed is in itself upon the earth: and it was so. And the earth
brought forth grass, and herb yielding seed after his kind, and the
tree yielding fruit, whose seed was in itself, after his kind.” Here we
rise to organized and vegetative bodies. At the Divine command, herbs,
plants, trees, and all the almost endless varieties of the vegetable
world, bearing their several seeds and fruits, according to their
different kinds, immediately began to appear. Thus before God formed
any living creature to dwell upon the earth, he provided abundantly
for its sustenance. “Now as God delights to manifest himself in the
little as well as the great,” says a celebrated commentator, “he has
shown his consummate wisdom in every part of the vegetable creation.
Who can account for, or comprehend, the structure of a single tree or
plant? The roots, the stem, the woody fibres, the bark, the rind, the
air-vessels, the sap-vessels, the leaves, the flowers, and the fruits,
are so many mysteries. All the skill, wisdom, and power of men and
angels, could not produce a single grain of wheat!”
Dr. Hales, in his Statistical Essays, has observed, that the substances
of vegetables appear, by a chemical analysis, to be composed of
sulphur, volatile salt, water, and earth, which are all endued with
mutually attracting powers; and also of a large portion of air, which
has a wonderful power of strongly attracting in a fixed state, or
of repelling in an elastic state, with a power which is superior to
great compressive forces.[98] By the infinite combinations, action,
and reaction of these principles, all the operations in animal and
vegetable bodies are effected. These active aërial principles are very
serviceable in carrying on the work of vegetation to its perfection
and maturity; not only in helping, by their elasticity, to distend
each ductile part, but, also, by enlivening and invigorating their
sap, where, mixing with the other mutually attracting principles, they
are, by gentle heat and motion, set at liberty to assimilate into the
nourishment of the respective parts. The sum of the attracting powers
of these mutually acting and re-acting principles, is, while in this
nutritive state, superior to their repelling power; by which the work
of nutrition is gradually advanced by the nearer and nearer union of
these principles from a less to a greater degree of consistency, till
they are advanced to that viscid, ductile state, whence the several
parts of vegetables are formed; and are, at length, firmly compacted
into hard substances, by the flying off of the watery diluting vehicle:
but when they are again disunited by the watery particles, their
repelling power is thereby become superior to their attracting power,
and the union of the parts of vegetables is so thoroughly dissolved,
that putrefaction commences.
God has endued the vegetable creation with the astonishing power
of multiplying itself by seeds, slips, roots. &c. ad infinitum: it
contains in itself all the rudiments of the future plants through
their endless generations. The celebrated Linnæus, in an “oration
concerning the augmentation of the habitable earth,” which proceeds on
the supposition of the existence of a sexual system in the vegetable
world, shows how from one plant of each species the immense number
of individuals now existing might arise. He gives some instances of
the surprising fertility of certain plants; as, of the elecampane,
one plant of which produced 3,000 seeds; of spelt, 2,000; of the
sun-flower, 4,000; of the poppy, 3,200; of tobacco, 40,320: and one
grain of Turkey-corn produces 2,000 others! But supposing any annual
plant producing yearly only two seeds, even of these, after 20 years,
there would be 1,048,576 individuals. For they would increase yearly
in a double proportion, _viz._ 2, 4, 8, 16, 32, &c. The seed of the
_elm_, as a learned author observes, affords a remarkable instance of
the prolific power with which the vegetable creation is endued, to
multiply its different species. “This tree produces one thousand five
hundred and eighty-four millions of seeds; and each of these seeds
has the power of producing the same number. How astonishing is this
produce! At first one seed is deposited in the earth; from this one a
tree springs, which in the course of its vegetative life produces one
thousand five hundred and eighty-four millions of seeds. This is the
first generation. The second generation will amount to two trillions,
five hundred and ten thousand and fifty-six billions. The third
generation will amount to fourteen thousand six hundred and fifty-eight
quadrillions, seven hundred and twenty-seven thousand and forty
trillions! And the fourth generation from these would amount to fifty
one sextillions, four hundred and eighty-one thousand three hundred
and eighty-one quintillions, one hundred and twenty-three thousand one
hundred and thirty-six quadrillions! Sums too immense for the human
mind to conceive; and when we allow the most confined space in which a
tree can grow, it appears that the seeds of the third generation from
one elm would be many myriads of times more than sufficient to stock
the whole superficies of all the planets in the solar system!”
While many plants and trees may be propagated by branches, buds,
suckers, and leaves fixed in the ground; so concerning the
dissemination of seeds after they come to maturity, the Author of
nature has wisely provided in various ways; this being absolutely
necessary, since without it no crop could follow. The stalks and stems
favor this purpose; for these raise the fruit above the ground, so that
the winds, shaking them to and fro, widely disperse the ripe seeds.
The pericarpium, a pellicle or thin membrane encompassing the fruit or
grain of a plant, is generally shut at the top, that the seeds may not
fall before they are shaken out by stormy winds. Wings are given to
many seeds, by the help of which they fly far from the mother plant,
and frequently spread over a large tract of country. These wings
consist either of down, as in most of the composite-flowered plants;
or of a membrane, as in birch, alder, ash, &c. Several kinds of fruits
are endued with a remarkable elasticity, by the force of which the
ripe pericarpies throw the seeds to a great distance; as wood-sorrel,
spurge, phyllanthus, and dittany. Other seeds or pericarpies are rough,
or provided with hooks, as hounds-tongue, agrimony, &c; so that they
are apt to stick to animals which pass by them, and by this means are
carried to their holes, where they are both sown and manured. Berries,
as well as other pericarpies, are by nature allotted for aliment to
animals; but, with this condition, that while they eat the pulp, they
shall sow the seeds: for when they feed on it, they either disperse
them at the same time; or, if they swallow them, they are returned
unhurt. The mistletoe always grows on other trees, because the thrush
eating its seeds, casts them forth with its dung. The cross-bill living
on fircones, and the haw-finch feeding on pinecones, sow many of their
seeds.
The structure of plants contributes essentially both to their own
preservation, and that of others. But the wisdom of the Creator appears
very remarkable in the manner of the growth of trees. For as their
roots descend deeper than those of other plants, provision is thereby
made that they shall not rob them too much of nourishment;[99] and
what is still more, a stem, not above a span in diameter, often shoots
its branches very high; these bear perhaps many thousand buds, each of
which is a plant, with its leaves, flowers, and stipulæ. Now if all
these grew on the plain, they would take up a thousand times as much
space as trees do; and, in this case, there would scarcely be room in
all the earth for so many plants as at present trees alone afford.
Besides, plants that shoot up in this way are more easily preserved
from cattle by a natural defence: their leaves also, falling in autumn,
cover the plants growing about them against the rigor of the winter;
and, in the summer, they afford a pleasing shade, not only to animals,
but to plants, against the intense heat of the sun. We may add, that
trees, like all other vegetables, imbibe water from the earth: which
does not circulate again to the root, but being dispersed like small
rain, by the transpiration of the leaves, moistens the plants that grow
around. Many plants and shrubs are armed with thorns, as the buckthorn,
sloe, carduus, cotton-thistle, &c: these serve to keep off animals,
which otherwise would destroy their fruit. At the same time, they cover
many other plants, especially of the annual kind, under their branches.
Nay it has frequently been observed on commons where furze grows, that
wherever a bush was left untouched for some years by the inhabitants a
tree has sprung up, being secured by the prickles of that shrub from
the bite of cattle. So that while adjacent grounds are robbed of plants
by voracious animals, some may be preserved to ripen flowers and
fruit, and stock the surrounding parts with seeds which otherwise would
be quite extirpated. All herbs cover the ground with their leaves, and
by their shade hinder it from being totally deprived of that moisture
which is necessary to their nourishment. Mosses, which adorn the most
barren places, do, at the same time, preserve lesser plants when they
begin to shoot, from cold and drought; as is evident in gardens, where
plants are preserved in the same way. They also hinder the fermenting
earth from forcing the roots of plants upwards in the spring; like what
happens annually to trunks of trees, and other things put into the
ground. Hence very few mosses grow in warm climates, the same necessity
not existing in those places.
The great Author of all things intended that the whole earth should be
covered with plants, and that no place should be void or barren. But
since all countries have not the same changes of seasons, and every
soil is not equally adapted to every plant; therefore, that no place
should be without some, he gave to each of them such a nature as might
be chiefly accommodated to their own climate: so that some of them can
bear intense cold, others an equal degree of heat; some delight in dry
ground, others in moist, &c. Hence plants grow where the seasons of the
year and the soil are friendly to their constitution. Grasses, the most
common of all plants, can bear almost any temperature of air: in this
the good providence of the Creator particularly appears; for all over
the globe they are necessary for the nourishment of cattle. The same
is observed in relation to our most common grains. Thus neither the
scorching sun, nor the pinching cold, hinders any country from having
vegetables. Nor is there any soil which does not bring forth many kinds
of plants. Deserts and sandy places are adorned with trees and plants.
If we connect the vast fecundity of vegetables with their number,
how bountiful will the great Author of nature appear! Solomon had a
comprehensive knowledge of the different species of plants, for he
“spake of trees, from the cedar-tree that is in Lebanon even unto
the hyssop that springeth out of the wall;” but his writings on this
subject, not being quoted by any ancient author, nor the least fragment
remaining, are entirely lost. Theophrastus, a Greek philosopher, who
succeeded Aristotle in his school at Athens, where his name became so
celebrated that he was attended by two thousand pupils, wrote a work
entitled “The History of Plants,” in which above 500 different plants
are described. Dioscorides, a Grecian by birth, but under the Roman
empire, a physician and botanist in the time of Nero, being near 300
years posterior to Theophrastus, describes about 600 plants. Pliny
the elder,[100] in his voluminous work entitled “The History of the
World,” gives descriptions of above 1,000 different species of plants.
Hieronymus Bock, or Bouc, a German, generally known by the name of
_Tragus_, in 1532, published a History of Plants, in which he describes
800 species.
From later botanical researches, we learn, that the bountiful
Creator has enriched the earth with about 20,000 different species
of vegetables. The following statement of the progress of botanical
knowledge has recently been given to the public. Messrs. Humboldt
and Boupland, the celebrated travellers, have collected in their
five years’ travels through South America, 3,800 species of plants,
of which upwards of 3,000 were new, and absolutely unknown before
to the botanists of Europe. We are at present acquainted altogether
with 44,000 species of plants; while the whole number mentioned by
the Greeks, Romans, and Arabians, does not exceed 1,400. It is worth
remarking, that the vegetable productions of the new world seem to have
been in an inverse ratio, both in point of number and luxuriance, to
those of the animal kingdom. In North America, for instance, the number
of lofty trees is far greater than in Europe. In the former country,
there are found 137 species of trees, whose trunks exceed the height
of 30 feet; while in Europe there are scarcely 45 species. But it is
singular there are no firs to be found on any part of the mountains of
South America, between the tropics, though they are very abundant in
North America. The reason why Magnolias, and other equinoxial plants,
appear so far north in America, is, that as far as lat. 48 deg. the
summers are 9 degrees (of Fahrenheit) hotter than in the corresponding
European latitudes. The winters, however, are more than proportionably
colder. At Philadelphia the summer is as hot as at Rome; while the
winter corresponds with that of Vienna. At Quebec, the summer is warmer
than at Paris; the winter colder than at St. Petersburgh. Beyond Lake
Superior, and at Hudson’s Bay, it is said that the earth is perpetually
frozen at the depth of three feet from the surface, which prevents the
inhabitants from digging wells. The same thing happens in Siberia,
on the banks of the Lena; while in South America there are cities at
a greater height than the highest summit of the Pyrenees, and houses
more elevated than the Peak of Teneriffe, the region, in Europe, of
perpetual congelation. To this we may add, that Linnæus, the celebrated
botanist, divided all plants into classes, the classes into orders, the
orders into genera, and the genera into species: and the species, we
are told, amount perhaps to 40,000, or 50,000, or more!
The fertility of the earth has been continued from the creation,
through every successive period, to the present time. Plants spring
up, grow, flourish, ripen their fruit, wither, and at last, having
finished their course, die, and return to the dust again, from whence
they first took their rise. Thus black mould, which covers the earth,
is generally owing to dead vegetables. For all roots descend into the
sand by their branches, and after a plant has lost its stem, the root
remains; but this too rots at last, and changes into mould. Thus this
kind of earth is mixed with sand, by the arrangement of nature, nearly
in the same way as dung thrown on fields is wrought into the earth by
the industry of the husbandman. But the earth offers again to plants
from its bosom what it has thus received. For when seeds are committed
to the earth, they draw to themselves, accommodate to their nature,
and turn into plants, the more subtile parts of this mould by the
co-operation of the sun, air, and rain; so that the tallest tree is,
properly speaking, nothing but mould wonderfully compounded with air
and water, and modified by a virtue communicated to a small seed by the
Creator. From these plants, when they die, just the same kind of mould
is formed as gave birth to them originally; whence fertility remains
continually uninterrupted. Whereas the earth could not make good its
annual consumption, unless it were constantly recruited by new supplies.
That the Author of nature had so constituted the world that none of the
elements should be subject to destruction, might have been supposed by
the ancients; but, till the present advanced state of the science of
chemistry, no proof of this interesting fact could have been adduced.
Of the indestructibility of matter it may be remarked, that provision
has been made even for the restoration of the fallen leaves of
vegetables, which rot on the ground, and, to a careless observer, would
appear to be lost for ever. Berthollet has shown by experiment, that,
whenever the soil becomes charged with such matter, the oxygen of the
atmosphere combines with it, and converts it into carbonic acid gas.
The consequence of this is, that this same carbon in process of time
is absorbed by a new race of vegetables, which it clothes with a new
foliage, and which is itself destined to undergo similar putrefaction
and renovation to the end of time.
The selection of a few remarkable trees and plants will serve to
impress the reader with a sense of the wisdom and power of God, as
displayed in the vegetable kingdom. As rivers and brooks are very
seldom found in deserts and sandy places, many of the trees growing
there distil water; and, by that means, afford great comfort both to
man and beast. Thus the _Tillandsia_, which is a parasitical plant,
growing on the tops of trees in the deserts of America, has its leaves
turned at the base into the shape of a pitcher, with the extremity
expanded; in these the rain is collected, and preserved for the use of
men, beasts, and birds. The water-tree in Ceylon produces cylindrical
bladders, covered with a lid; into these is secreted a most pure
and refreshing water. There is a kind of cuckow-pint in New France,
of which, if a person break a branch, it will afford him a pint of
excellent water. How wise, how beneficial is the adaptation of plants
to the inhabitants of those countries where they grow!
On the top of a rock, in one of the Canary Islands, says Glass, in
his History, grows the _Fountain Tree_, called, in the language of
the ancient inhabitants, _Garse_, (sacred or holy tree,) which for
many years has been preserved sound, entire, and fresh. Its leaves
constantly distil such a quantity of water as is sufficient to furnish
drink to every living creature in Hierro; nature having provided this
remedy for the drought of the island. It is situated about a league
and a half from the sea. Nobody knows of what species it is, only
that it is called _Til_. It is distinct from other trees, and stands
by itself. The circumference of its trunk is about twelve spans, the
diameter four, and in height from the ground to the top of the highest
branch forty spans: the circumference of all the branches together, is
one hundred and twenty feet. The branches are thick and extended: the
lowest commence an ell from the ground. Its fruit resembles the acorn,
and tastes something like the kernel of a pine-apple, but is softer and
more aromatic. The leaves of this tree resemble those of the laurel,
but are larger, wider, and more curved; they come forth in perpetual
succession, so that the tree always remains green. On the north side
of the trunk, are two large tanks, or cisterns, of rough stone, or
rather one cistern divided, each half being twenty feet square, and
sixteen spans in depth. One of these contains water for the drinking of
the inhabitants; and the other that which they use for their cattle,
washing, and such like purposes. Every morning, near this part of
the island, a cloud or mist arises from the sea, which the south and
easterly winds force against the fore-mentioned steep cliff, so that
the cloud, having no vent but by the gutter, gradually ascends it,
and from thence advances slowly to the extremity of the valley, where
it is stopped and checked by the front of the rock, which terminates
the valley, and then rests upon the thick leaves and wide-spreading
branches of the tree, from whence it distils in drops, during the
remainder of the day, until it is at length exhausted, in the same
manner that we see water drip from the leaves of trees after a heavy
shower of rain. This tree yields most water in those years when the
Levant or easterly winds have prevailed for a continuance, for by these
winds only the clouds or mists are drawn hither from the sea. A person
lives on the spot near where this tree grows, who is appointed by the
council to take care of it, and its water; and is allowed a house to
live in, with a certain salary. He every day distributes to each family
of the district, seven pots or vessels full of water, besides what he
gives to the principal people in the island.
In Cockburn’s Voyages we find the following account of the _Dropping
Tree_, near the mountains of Vera Paz, in America. “On the morning of
the fourth day we came out on a large plain where were numbers of fine
deer, and in the middle stood a tree of an unusual size, spreading its
branches over a vast compass of ground. Curiosity led us up to it; we
had perceived, at some distance, the ground about it to be wet, at
which we began to be somewhat surprised, as well knowing there had no
rain fallen for near six months past, according to the certain course
of the season in that latitude; that it was impossible to be occasioned
by the fall of dew on the tree, we were convinced, by the sun having
power to exhale all moisture of that nature a few minutes after his
rising. At last, to our great amazement, as well as joy, we saw water
dropping, or, as it were, distilling fast from the end of every leaf of
this wonderful (nor had it been amiss, if I had said miraculous) tree;
at least it was so with respect to us, who had been laboring four days
through extreme heat without receiving the least moisture, and were now
almost expiring for the want of it. We could not help looking on this
as liquor sent from heaven to comfort us under our great extremity. We
catched what we could of it in our hands, and drank very plentifully
of it, liking it so well, that we could hardly prevail with ourselves
to give it over. A matter of this nature could not but excite us to
make the strictest observations concerning it; and accordingly we staid
under the tree near three hours: we found that we could not clasp its
body by five times. We observed the soil where it grew to be very
stony; and upon the nicest inquiry we could afterwards make, both of
the natives of the country, and the Spanish inhabitants, we could not
learn that there was any such tree known throughout New Spain, nor
perhaps all America over.”
The _Tallow Tree_, mentioned by Du Halde in his History of China, grows
in great plenty in that country, producing a substance much like our
tallow, and serving for the same purposes. It is about the height of a
cherry tree; its leaves are in form of a heart, of a deep shining red
color, and its bark very smooth. Its fruit is enclosed in a kind of pod
or cover, like a chestnut, and consists of three round white grains,
of the size and form of a small nut, each having its peculiar capsule,
and within that a little stone. This stone is encompassed with a white
pulp, which has all the properties of true tallow, as to consistence,
color, and even smell; and accordingly the Chinese make their candles
of it, which doubtless would be as good as those in Europe, if they
knew how to purify this vegetable as we do the animal tallow, and make
their wicks as fine. All the preparation they give it, is to melt it
down, and mix a little oil with it, to make it softer and more pliant.
It is true, their candles made of it yield a thicker smoke, and give a
dimmer light than those of ours; but these defects are owing in a great
measure to the wicks, which are not of cotton, but only a little rod or
switch of dry light wood, covered with the pith of a rush, wound round
it, which, being very porous, serves to filtrate the minute parts of
the tallow, attracted by the burning stick, and which by this means is
kept burning.
The _Tea Tree_ is a native of China, of very slow growth; it has a
black, woody, irregular, branched root, and rises to a fathom high, or
rather more. Its leaves are very thick set, without any regularity,
and are, in substance, like those of the morella cherry tree; but,
when young, they resemble, except in color, the spindle tree, with red
berries, called _euonymus_. The larger leaves are about two inches
long, and one broad. The method of gathering them is one by one, lest
they should be torn. The first gathering begins at the middle of the
first moon, immediately before the vernal equinox; these leaves are
scarcely full opened, being only of two or three days growth; but
they are accounted the best, fetch the best price, and are called the
flower of the tea; but, by the Chinese, _veui boui_, or bohea tea. The
second gathering begins about a month after, and the last gathering is
in June; the leaves of the gatherings are sorted into three several
classes, according to their size and goodness, and sold accordingly.
After the leaves are gathered, they are the same day carried to the
work-house, and roasted over a slow fire in an iron pan; and, that they
may be thoroughly and equally dried, the roaster keeps them continually
stirring with his hands, then takes them out, with a shovel like a fan,
and commits them to the rollers, who roll them with the palms of their
hands in small parcels, till they are equally cooled, and the sharp
yellow and greenish juice is quite discharged. They are then poured
upon a mat, and sorted a second time into different classes according
to their goodness, and those that are less curled or burnt are taken
out.--It is said that the Dutch were the first importers of tea into
Europe, about the year 1606, for which they exchanged dried sage with
the Chinese: and though the English did certainly about the same time
gain a knowledge of this plant, we do not find that the government
took any cognizance of it till the Restoration, when in 1660, a duty
of eight-pence per gallon was laid on the liquor made, and sold in all
coffee-houses.
The _Coffee Tree_ is a native of the Indies, grows surprisingly quick,
and its body is naturally of an upright form; its leaves are something
like those of the common bay, but curl at the end and hang downwards.
The blossoms first appear in July, when they show themselves in bunches
at the joints, near the ends of the branches; they are much like
the flowers of the jessamine, but have the addition of some yellow
_apices_, which are loose on the top of the blossom, and a _style_
which shoots out near half an inch above it. The fruit appears about
October, which hangs on the tree till the next July before it is ripe:
it is then gathered and prepared for the market, or for propagating
other plants. Coffee is, perhaps, one of the greatest blessings, among
those that are not really necessaries of life, that Providence has
granted to mankind; and, considering its beneficial qualities as well
as its agreeable properties, it should be ranked among the most elegant
plants, in foliage, blossom, and fruit. It is a wholesome, pleasant,
and cheap beverage, and of great use in many disorders. The origin of
the use of coffee is stated to be as follows. A prior of a monastery
in the part of Arabia where this berry grows, having remarked that the
goats which eat of it became extremely brisk and alert, resolved to try
the experiment on his monks, of whom he so continually complained for
their lethargic propensities. The experiment turned out successful;
and, it is said, it was owing to this circumstance that the use of this
Arabian berry came to be so universal.
The _Banian Tree_ is a native of several parts of the East Indies. It
has a woody stem, branching to a great height and vast extent, with
heart-shaped entire leaves, ending in acute points. Of this tree the
following lines of Milton contain a description equally beautiful and
just.
“There soon they chose
The fig tree; not that tree for fruit renown’d,
But such as at this day to Indians known
In Malabar or Decan, spreads her arms,
Branching so broad and long, that in the ground
The bended twigs take root and daughters grow
About the mother tree, a pillar’d shade,
High over arch’d and echoing walks between;
There oft the Indian herdsman, shunning heat,
Shelters in cool, and tends his pasturing herds
At loop-holes cut through thickest shade.”
The banian tree, or Indian fig, is perhaps the most beautiful of
nature’s productions in that genial climate, where her luxuriance is
displayed with the greatest profusion and variety. Some of these trees,
as they are continually increasing, and, contrary to most other things
in animal and vegetable life, seem to be exempted from decay, grow to
an amazing size. Every branch projecting from the main body throws out
its own roots, at first in small tender fibres, several yards from the
ground; these continually grow thicker till they reach the surface; and
there striking in, they increase to large trunks, and become parent
trees, shooting out new branches from the top; these at length suspend
their roots, which, swelling into trunks, produce other branches:
thus continuing in a state of progression as long as the earth, the
first parent of them all, contributes her sustenance. The Hindoos
are peculiarly fond of this tree; they view it as an emblem of the
Deity, from its long duration, outstretching arms, and overshadowing
beneficence; they almost pay it divine honors, and
“Find a fane in every sacred grove.”
Near these trees the most esteemed pagodas are generally erected; under
their shade the brahmins spend their lives in religious solitude; and
the natives of all casts and tribes are fond of recreating in the cool
recesses, beautiful walks, and lovely vistas of this umbrageous canopy,
impervious to the hottest beams of a tropical sun.
A description of a tree in the island of Java, called the _Upas_, or
Poison Tree, is given to the public by a surgeon belonging to the
Dutch East India Company, of the name of Foersch, who was stationed at
Batavia, in the year 1774. Surprising its this account may be, it is
accompanied by so many public facts, and names of persons and places,
that it is somewhat difficult to conceive it fabulous. The Upas grows
about seven leagues from Batavia, in a plain surrounded by rocky
mountains, the whole of which plain, containing a circle of ten or
twelve miles round the tree, is totally barren. Nothing that breathes
or vegetates can live within its influence. The bird that flies over
it drops down dead. The beast that wanders into it expires. The whole
dreadful area is covered with sand, over which lie scattered loose
flints and whitened bones, Thus,
“Fierce in dread silence on the blasted heath,
Fell Upas sits!”
This tree may be called the emperor’s great military magazine. In
a solution of the poisonous gum which exudes from it, his arrows
and offensive weapons are dipped; the procuring, therefore, of this
poisonous gum, is a matter of as much attention as of difficulty.
Criminals are only employed in this dreadful service. Of these, several
every year are sent with a promise of pardon and reward if they procure
it. Hooded in leather cases, with glass eyelet-holes, and secured as
much as possible from the foul effluvia of the air they are to breathe,
they undertake this melancholy journey, travelling always with the
wind. About one in ten escapes, and brings away a little box of this
direful commodity!
Every one skilled in natural history knows, that the mimosæ, or
sensitive plants, close their leaves, and bend their joints, on
the least touch. This is truly astonishing: but hitherto no end or
design of nature has appeared from these motions; they soon recover
themselves, and the leaves are expanded as before. Dionæ Muscipula, or
Venus’s Fly Trap, is a newly discovered sensitive plant; and shows that
nature may have some view towards its nourishment, in forming the upper
joint of its leaf like a machine to catch food. Upon the middle of this
lies the bait for the unhappy insect that becomes its prey. Many minute
red glands, that cover its inner surface, and which, perhaps, discharge
some sweet liquor, tempt the poor animal to taste them; and the instant
these tender plants are irritated by its feet, the two lobes rise up,
grasp it fast, lock the two rows of spines together, and squeeze it to
death. Further, lest the strong efforts for life, in the creature thus
taken, should serve to disengage it, three small erect spines are fixed
near the middle of each lobe among the glands, that effectually put an
end to all its struggles. Nor do the lobes ever open again, while the
dead animal continues there. But it is nevertheless certain that the
plant cannot distinguish between an animal and a mineral substance; for
if we introduce a straw, or a pin, between the lobes, it will grasp it
full as fast as if it were an insect. This plant grows in America, in
wet shady places, and flowers in July and August. The largest leaves
are about three inches long, and an inch and a half across the lobes:
the glands of those exposed to the sun are of a beautiful red color;
but those in the shade are pale, and inclining to green. The roots are
squamous, sending forth few fibres, and are perennial. The leaves are
numerous, inclining to bend downwards, and are placed in a circular
order; they are jointed and succulent; the lower joint, which is a kind
of stalk, is flat, longish, two-edged, and inclining to heart-shaped.
In some varieties, they are serrated on the edges near the top. The
upper joint consists of two lobes, each lobe is of a semi-oval form,
with their margins furnished with stiff hairs, like eye-brows, which
embrace or lock in each other when they are inwardly irritated. The
upper surfaces of these lobes are covered with small red glands, each
of which appears, when highly magnified, like a compressed arbutus
berry. Among the glands, about the middle of each lobe, are three very
small erect spines. When the lobes enclose any substance, they never
open again while it continues there. If it can be shoved out, so as
not to strain the lobes, they expand again; but if force is used to
open them, so strong has nature formed the spring of their fibres,
that one of the lobes will generally snap off, rather than yield. The
stalk is about six inches high, round, smooth, and without leaves,
ending in a spike of flowers. The flowers are milk-white, and stand,
on foot stalks, at the bottom of which is a little painted bractea, or
flower-leaf.
There is not an article in botany more admirable than a contrivance,
visible in many plants, to take advantage of good weather, and to
protect themselves against bad. They open and close their flowers and
leaves in different circumstances; some close before sun-set, some
after; some open to receive rain, some close to avoid it. The petals
of many flowers expand in the sun; but contract at night, or on the
approach of rain. After the seeds are fecundated, the petals no longer
contract. All the trefoils may serve as a barometer to the husbandman;
they always contract their leaves on an impending storm. Some plants
follow the sun, others turn from it. Many plants, on the sun’s recess,
vary the position of their leaves, which is styled, the _sleep of
plants_. A singular plant was lately discovered in Bengal. Its leaves
are in continual motion all day long; but when night approaches; they
fall down from an erect posture to rest.[101]
A plant has a power of directing its roots for procuring food. The red
whortle-berry, a low evergreen plant, grows naturally on the tops of
our highest hills, among stones and gravel. This shrub was planted in
an edging to a rich border, under a fruit wall. In two or three years
it over-ran the adjoining deep-laid gravel walk, and seemed to fly from
the border, in which not a runner appeared. An effort to come at food,
in a bad situation, is extremely remarkable, in the following instance.
Among the ruins of New Abbey, formerly a monastery in Galloway, there
grows on the top of a wall, a plane tree, about twenty feet high.
Straitened for nourishment in that barren situation, it several years
ago directed roots down the side of the wall, till they reached the
ground ten feet below; and now the nourishment it afforded to those
roots during the time of their descending, is amply repaid, having
every year, since that time, made vigorous shoots. From the top of the
wall to the surface of the earth these roots have not thrown out a
single fibre, but are now united in a single root.
Plants, when forced from their natural position, are endowed with the
power to restore themselves. A hop-plant, twisting round a stick,
directs its course from south to west, as the sun does. Untwist it, and
tie it in the opposite direction, it dies. Leave it loose in the wrong
direction, it recovers its natural direction in a single night. Twist
the branch of a tree, so as to invert its leaves, and fix it in that
position, if left in any degree loose, it untwists itself gradually,
till the leaves be restored to their natural position. What better can
an animal do for its welfare? A root of a tree meeting with a ditch
in its progress, is laid open to the air. What follows? It alters its
course, like a rational being, dips into the ground, surrounds the
ditch, rises on the opposite side to its wonted distance from the
surface, and then proceeds in its original direction. Lay a wet sponge
near a root laid open to the air; the root will direct its course
to the sponge. Change the place of the sponge; the root varies its
direction. Thrust a pole into the ground at a moderate distance from
a climbing plant; the plant directs its course to the pole, lays hold
of it, and rises on it to its natural height. A honeysuckle proceeds
in its course till it be too long for supporting its weight; and then
strengthens itself by shooting into a spiral. If it meet with another
plant of the same kind, they coalesce for mutual support, the one
screwing to the right, the other to the left. The claspers of briony
shoot into a spiral, and lay hold of whatever comes in their way for
support. If, after completing a spiral of three rounds, they meet with
nothing, they try again, by altering their course.
By comparing these and other instances of seeming voluntary motion
in plants, with that share of life wherewith some of the inferior
kind of animals are endowed, we can scarce hesitate at ascribing
the superiority to the former: that is, putting sensation out of
the question. Muscles, for instance, are fixed to one place as much
as plants are; nor have they any power of motion, besides that of
opening and shutting their shells; and in this respect, they have no
superiority over the motion of the sensitive plant: nor does their
action discover more sagacity, or even so much, as the roots of the
plane tree, mentioned by Lord Kames.[102]
Beckmann’s History of Inventions and Discoveries presents us with an
interesting account of Kitchen Vegetables and Garden Flowers, collected
from numerous authorities; some parts of which I shall now transcribe,
and incorporate with information derived from other sources.
Our foreign kitchen vegetables have, for the most part, been procured
from the southern countries, but chiefly from Italy; and the number of
them has rapidly increased, in the course of the last two centuries.
Many of them require laborious attention to make them thrive in our
climate. On the other hand, some grow so readily, and increase so much
without culture, even in the open fields, that they have become like
indigenous weeds, as is the case with hops, which at present abound
in our hedges. Some plants, however, both indigenous and foreign,
which were formerly raised by art and used at the table, are no
longer cultivated, because we have become acquainted with others more
beneficial.
Among many which were formerly cultivated, but at present are no longer
esteemed, are the following. Winter-cresses, _erysimum barbarea_;
common alexander, _smyrnium olosatrum_, which in the seventeenth
century was used instead of celery; bulbous chærophyllum, the roots of
which are still brought to market at Vienna, where they are boiled and
eaten as salad. Rampion, _phyteuma spicata_, was formerly used in like
manner. The earth nut, the tuberous roots of the _lathyrus tuberosus_,
which grows wild in many parts of Germany, is still cultivated in
Holland and in some districts on the Rhine. Rocket, _brassica eruca_,
in Italian, _ruchette_, the young leaves of which were eaten by our
forefathers as salad, and is still retained in Italy. And there are
several others either but imperfectly known or little regarded.
Among the kitchen vegetables of which no certain traces are to be found
in the works of the ancients, is spinage, _spinacea oleracea_. Its
native country is unknown; but the name is new, and certainly derived
from the nature of its prickly seeds. As far as I know, it first occurs
in the year 1351, among the food used by the monks on fast-days; and at
that time it was written _spinagium_ or _spinachium_.
The ancients were acquainted with curled cabbages, and even with
some of those kinds which we call _broccoli_. Under this term is
understood all those species, the numerous young flower heads of which,
particularly in spring and autumn, can be used like cauliflowers.
The broccoli used at present was however first brought from Italy to
France, together with the name, about the end of the sixteenth century.
Our cauliflower, about the same time, was first brought from the Levant
to Italy; and in the end of the seventeenth century was transplanted
thence to Germany. For a long time the seeds were procured annually
from Cyprus, Candia, and Constantinople, by the Venetians and Genoese,
who sent them to every part of Europe, because at that time the art
of raising seed was not understood. The seeds of cauliflowers were
brought from Italy to Antwerp, where no seed was raised, or such only
as produced degenerate plants. Prosper Alpinus, in the year 1588, found
abundance of this vegetable in Egypt, and from his account there is
reason to conjecture it was then very little known in Europe. Conrad
Gesner seems not to have been acquainted with it; at any rate it is not
mentioned by him in a list of the cabbage kind of plants. Even in the
time of Bauhin, it must have belonged to those vegetables which were
scarce; because he has been so particular in naming the garden in which
he saw it. Von Hohberg, who wrote about 1682, says that cauliflower, a
few years before, had been brought to Germany for the first time.--It
would be difficult to define all the species of the cabbage kind, the
leaves and flowers of which were used by the ancients as food; but
it would be a task still more arduous to determine those that have
esculent roots.
Potatoes were first imported into Europe, in the year 1565, by Hawkins,
from Santa-Fe, New Mexico, Spanish America. They were planted for
the first time in Ireland, by Sir Walter Raleigh, who had an estate
in that kingdom. The natural history of the potatoe was so little
understood, that a total ignorance which part of the plant was the
proper food, had nearly ruined any further attention towards its
cultivation. For perceiving green apples appear on the stems, these
were first supposed to be the fruit; but on being boiled, and finding
them unpalatable, or rather nauseous, Raleigh was disgusted with his
acquisition, nor thought any more of cultivating this plant. Accident,
however, discovered the real fruit, owing to the ground being turned
over, through necessity, that very season; and to his surprise, a
plentiful crop was found under ground, which being boiled, proved
nourishing to the stomach, and grateful to the taste. On its utility
being known, its cultivation became general through Ireland. It found
its way to this kingdom, and was first planted on the western coast,
in consequence of a vessel containing some potatoes, being wrecked at
the village of Formby, in Lancashire; a place still famed for this
excellent vegetable.
Asparagus was first planted in England in the year 1662, in the reign
of Charles II. Artichokes were first introduced about the same time.
Cos lettuces were originally brought from the island of Cos, near
Rhodes, in the Mediterranean. Turnips were brought into this country
from Hanover. In the time of Henry VIII, several kinds of fruits and
plants were cultivated in England, as apricots, and a fine gooseberry
from Flanders; also salads, carrots, and other edible roots. These
vegetables were before this period imported from Holland and Flanders.
So that Queen Catherine, to procure a salad, had to dispatch a
messenger to fetch it from those countries. Fruit seems to have been
scarce in the time of Henry VII. In an original manuscript, signed by
himself, and kept in the Remembrance office, it appears that apples
were not less than one or two shillings each, and that a red one cost
two shillings. The great plenty and variety of vegetables displayed
upon modern tables, through every month in the year, evidently shows
what superior blessings we enjoy, in this respect, compared with those
of our forefathers.
Some of the flowers introduced into our gardens, and now cultivated
either on account of their beauty, or the pleasantness of their smell,
have been procured from plants which grew wild, and which have been
changed, or, according to the opinion of florists, improved by the art
of the gardener. The greater part of them however came originally from
distant countries, where they grow in as great perfection as ours,
without the assistance of man. It is probable that the modern taste for
flowers came from Persia to Constantinople, and was imported thence
to Europe for the first time, in the sixteenth century. At any rate,
many of the productions of our flower-gardens were conveyed to us by
that channel. Clusius and his friends, in particular, contributed very
much to excite this taste; and the new plants brought from both the
Indies by travellers who frequently visited these countries, tended
to increase it. That period also produced some skilful gardeners, who
carried on a considerable trade in the roots and seeds of flowers; and
these, likewise assisted to render it more general. Among these were
John and Vespasian Robin, gardeners to Henry IV, of France, and Emanuel
Sweert, gardener to the emperor Rodolphus II, from whom the botanists
of that time procured many rarities, as appears from different passages
of their works.
Simon de Tovar, a Spanish physician, brought the tuberose to Europe
before the year 1594 from the East Indies, where it grows wild in Java
and Ceylon, and sent some roots of it to Barnard Paludanus, who first
made this flower publicly known, in his annotations on Linschoten’s
voyage. The full tuberoses were first procured from seed by one Le
Cour, at Leyden, who kept them scarce for some years, by destroying
the roots. The propagation of them in most countries is attended with
difficulties: but in Italy, Sicily, and Spain, it requires no trouble;
and at present the Genoese send a great many roots to England, Holland,
and Germany. The oldest botanists classed them among the hyacinths, and
their modern name _polianthes tuberose_ was given them by Linnæus in
his Hortus Cliffortianus.
The auricula, _primula auricula_, grows wild among the long moss
covered with snow, on the confines of Switzerland and Steyermark,
whence it was brought to our gardens, where, by art and accident, it
has produced more varieties than any other species of flower. I do not
know who first transplanted it from its native soil. Pluche says only
that some roots were pulled up by Walloon merchants, and carried to
Brussels. However, this is certain, that it was first cultivated with
care by the Flemings, who were very successful in propagating it. In
the time of Clusius, most of the varieties of the auricula were scarce.