been introduced for a long time back into Britain, it is said first by
the Earl of Weymouth, thence sometimes named Weymouth Pine. This rather
elegant tree requires a warm sheltered situation, as it is easily torn
down by wind, from the weakness of the timber, which is inferior in
hardness and strength to any other pine we are acquainted with; and
from its slender needle leaf not having substance to withstand the
evaporation of much exposure. Altogether, the kind appears rather out
of climate in Britain, and, though the monarch of the pines in Canada,
holds here but a very subordinate place. Although extremely tender and
light, the matured timber does not soon decay when cut out thin and
exposed to wind and weather, nor worm when kept dry in houses; but when
employed in shipbuilding,—remaining always between the moist {72} and
dry, the condition most favourable to putrefaction, and surrounded by
a close, warm, putrid atmosphere,—it very soon, especially in masses,
becomes corrupted. It requires more time to season or dry in the
deal than any other wood, owing to the fineness of fibre, smallness
of pores, and want of density. From this quality of parting with its
moisture with extreme slowness, it forms convenient deck-planking for
vessels on tropical stations, or when employed in carriage of unslacked
lime, as the plank does not readily shrink and become leaky under the
great evaporation occasioned by the heat and arid air. Yellow pine has
generally about 40 growths of sap-wood.
We have had no acquaintance with American pitch pine as a growing tree.
As a timber, it is superior in several respects to all the others,
having a great deal more resinous matter, so much, as often to render
it semitranslucent. It is strong and weighty, and is used as a naval
timber for most of the purposes to which other pine timber is applied.
It forms the very best bottom planking. The shipwrights of the docks
at Devonport will attest its quality, as the bottom planking of the
Gibraltar of 80 guns: this vessel carried home to England from the
Mediterranean, a piece of coral rock of about ten tons weight sticking
in her bottom, her preservation {73} in all probability resulting from
the adhesive quality of this timber. Its great weight is, however,
a considerable inconveniency attending its use as spars, and the
abundance of resin, we should think, would unfit it for tree-nails;
resinous tree-nails,—probably from some derangement of the structure
or disposition to chemical change produced in the resin by the very
great pressure of the hard driving,—soon corrupting and infecting the
adjacent wood. In some cases we have also known very resinous Baltic
plank decay soon in vessels. The pitch pine, from the quantity of
resin, contracts little in drying, at least for a long time, till the
resin itself begins to dry up. It forms the best house-floors we have
seen, being strong and durable, continuing close at joinings, and the
fibre not readily taking in moisture when washed.
Our red-wood pine, when come to some age, is in wet ground attacked
by rot, which commences in the bulb and adjacent roots and stem, in a
manner very similar to the rot in larch. The red-wood also approaches
nearer to the outside where this rot exists, and on the side of the
tree where the rot is greatest. Most of our planted red pine forest,
especially in poor wet tills, and in all flat sandy moorish ground of
close subsoil, fall by decay at from 30 to 60 years old. This decay is
gradual, owing to the {74} difference in strength of constitution of
the individuals. Closeness of rearing and consequent tall nakedness of
stem, and disproportion of leaves to stem, would alone induce this in
a few years longer even in good soil, excepting perhaps in protected
narrow dells; but the decay commences much sooner when the soil is
unfavourable, and is no doubt accelerated by the mode of extracting
the seeds by kiln-drying the cones, and by using a weak variety of the
plant. The approach of this decay may often be noticed, several years
previous, in the saw-cross section of the stem mid-way up the tree—an
irregular portion of the section appearing of a different shade, from
breaking off free and irregular before the teeth of the saw, and not
having so much fibrous cover as the healthy part. When Scots fir rises
naturally, it is not nearly so subject to this decay even in very
inferior soils: the plants having generally much more room from the
first, do not rise so tall, have more branch in proportion to stem,
thence are more vigorous. The cones not being injured by kiln-drying,
may also account for this.
The fact that the red pine in Scotland has fewer sap-wood layers than
the red pine of Memel or of North America, and also the fact that, in
most situations in Scotland, the red pine soon {75} decays—soonest
in the places where the trees have fewest sap-wood layers, and where
the timber has been planted, that is, where the cones have been
kiln-dried—is worthy of notice. Scots red pine has generally from 15
to 40 layers, Memel from 40 to 50, Canadian often 100. We consider the
long moist open winter and cold ungenial spring in Scotland, and the
till bottoms soaking with water, perhaps aided by the transplanting,
and the kiln-drying of the cones, to be the cause of this early loss
of vitality or change of sap-wood into matured. In Poland and Prussia,
the earth does not remain so long cold and moist as in Scotland, but
is either frozen or sufficiently warm and dry;—this occurs even to a
greater degree in Canada[16], and neither the Memel nor Canadian have
any chance of being planted or kiln-dried.
WHITE LARCH—_Larix communis_, (_L. pyramidalis_).
White Larch is a timber tree combining so many advantages, its
properties so imperfectly known, of {76} so recent introduction,
and of such general culture, (about 10,000,000 plants being sold
annually from the nurseries of the valley of the Tay alone), that any
accurate notice of its history, its habitudes, and uses, must possess
an interest sufficient to arrest the attention of every one, from the
statesman and economist down to the mere lord and the squire. We shall
therefore devote to it a little more of our attention than we have
bestowed on those already treated of.
Larch is scattered over a considerable part of the northern hemisphere,
inhabiting nearly the same regions with the other Coniferæ. White
larch, the kind[17] common in Britain, is found growing extensively on
the alpine districts of the south of Europe, in Italy, Switzerland,
Sardinia; this may be termed the European temperate species. Another,
native to the country around Archangel, and extending from {77} Norway
eastward through Russia and Siberia, of inferior size, may be styled
the European Hyperborean. North America, like the old world, is said to
possess a temperate and hyperborean species. The first, Black Larch (L.
pendula), more generally extending along the longitudinal parallel of
the United States; the other, Red Larch (L. microcarpa), along that of
Lower Canada and Labrador. We have seen the American temperate attain
18 inches in diameter in Scotland, but it is much inferior in figure
and growth, and also cleanness of timber, to the Appenine or European
temperate, being covered with knots and protuberances. Though rough,
the timber is said to be of excellent quality.
It is now upwards of 80 years since the larch, so common in Britain,
was brought from the Appenines to Strath-Tay. The rapidity of its
growth and striking novelty of appearance, assisted by the influence of
the family of Athole (to a female of which some say we owe its first
introduction), soon attracted general attention: it quickly spread over
the neighbouring country, and was planted in every variety of soil
and situation, from the unfitness of which, in most places of the low
country, it is already fast decaying. About 40 years ago it began to
be planted in many parts of Britain. It is now introduced into almost
every new plantation in the two islands, and {78} the space of country
covered by its shade is extending with a rapidity unparalleled in the
history of any other ligneous plant.
Larch is generally conceived to be an alpine[18] plant, and its decay
in the low country attributed to situation or climate. This idea
seems to have arisen from its locality in Italy, and from observing
it succeed so well in our alpine districts, not taking into account
that the soil is different,—that it may be the soil of these districts
which conduces to the prosperity of the larch, and not the altitude.
Throughout Scotland, wherever we have observed the decay, it appeared
to have resulted almost solely from unsuitableness of soil. We have
witnessed it as much diseased on our highest trap hills, 1000 feet
in altitude, as on a similar soil at the base. Yet the freeness from
putrescency or miasma of the pure air of the mountain, {79} and
deficiency of putrescent matter in the ground, or other more obscure
agencies connected with primitive ranges, may have some influence to
counterbalance unsuitableness of soil. It is not probable that the
coolness and moisture of altitude would be necessary in Scotland to the
healthy growth of a vegetable which flourishes under Italian suns, on
the general level of the Appenine and on the Sardinian hills.
The rot, so general in growing larch, though sometimes originating in
the bulb or lower part of the stem, seems to have its commencement
most frequently in the roots. Thence the corruption proceeds upwards
along the connecting tubes or fibres into the bulb, and gradually
mounts the stem, which, when much diseased, swells considerably
for a few feet above the ground, evidently from the new layers of
sap-wood forming thicker to afford necessary space for the fluids to
pass upward and downward—the matured wood through which there is no
circulation approaching at this place within one or two annual layers
of the outside. In a majority of cases, the rot commences in the
roots which have struck down deepest into the earth, especially those
under the stool; these having been thrown to a considerable depth by
the young plant, as the tree enlarges, are shut out from aëration,
&c. by the {80} superior increasing stool and hard-pressed earth
underneath it; this earth at the same time becoming exhausted of the
particular pabulum of the plant. It is, therefore, quite probable, from
these parts of the roots being the weakest, that they will be most
susceptible of injury from being soaked in stagnant water in the flat
tills[19], starved during droughts in light sand, tainted by the putrid
vapours of rich vegetable mould, or poisoned by the corrosive action
of pernicious minerals. It may also be supposed that these smothered
sickly roots, not possessing sufficient power or means of suction
(endosmose), will be left out in the general economy of vegetation of
the plant, thence lose vitality, and become corrupt. But this affords
no explanation why the larch roots, under these circumstances, are more
liable to corruption than those of other trees, or how the bulb itself
should become contaminated. {81}
We have cut off the top, where the diameter of the section was about
three inches, from sound young larch trees, and found a similar rot
proceed downwards in a few months from the section, as rises from the
diseased roots in improper soil. There is something favourable to the
quick progress of this rot in the motion of the sap, or vitality of the
tree; as, under no common circumstances, would the wood of a cut larch
tree become tainted in so short a time.
The rot, though most general in trees which are chilled in wet cold
tills, or starved in dry sand, or sickly from any other cause, is also
often found to take place in the most luxuriant growing plants in open
situations, branched to the ground, and growing in deep soil free
from stagnating water. There must, therefore, be some constitutional
tendency to corruption in the larch, which is excited by a combination
of circumstances; and we must limit our knowledge for the present
to the fact, that certain soils, perhaps slightly modified by other
circumstances, produce sound, and others unsound larch, without
admitting any general influence from altitude, excepting in so far as
its antiseptic influence may go.
The fitness of soil for larch seems to depend more especially upon
the ability the soil possesses of affording an equable supply of
moisture; that is, upon its {82} mechanical division, or its powers of
absorption or retention of moisture; and its chemical composition would
seem only efficacious as conducive to this.
Soils and subsoils[20] may be divided into two classes. The first,
where larch will acquire a size of from 30 to 300 solid feet, and is
generally free of rot; the second, where it reaches only from 6 to 20
feet solid, and in most cases becomes tainted with rot before 30 years
of age.
CLASS I. SOILS AND SUBSOILS FOR LARCH.
_Sound rock, with a covering of firm loam, particularly when the rock
is jagged or cloven, or much dirupted and mixed with the earth._—In
such cases, a very slight covering or admixture of earth will suffice.
We would give the preference to primitive rock, especially micaceous
schist and mountain limestone. Larch seldom succeeds well on sandstone
or on trap, except on steep slopes, where the rock is quite sound and
the soil firm. {83}
Fully the one half of Scotland, comprehending nearly all the alpine
part, consists of primary rock, chiefly micaceous schist and gneiss.
These rocks are generally less decayed at the surface, better
drained, and fuller of clefts and fissures containing excellent earth
(especially on slopes), into which the roots of trees penetrate and
receive healthy nourishment, than the other primitive and transition
rocks, granite, porphyry, trap, or the secondary and tertiary
formations of nearly horizontal strata, red and white sandstone, &c.
Primary strata are generally well adapted for larch, except where
the surface has acquired a covering of peat-moss, or received a flat
diluvial bed of close wet till or soft moorish sand, or occupies a too
elevated or exposed situation—the two latter exceptions only preventing
the growth, not inducing rot.
_Gravel_, not too ferruginous, and in which water does not stagnate in
winter, even though nearly bare of vegetable mould, especially on steep
slopes, and where the air is not too arid, is favourable to the growth
of larch. It seems to prefer the coarser gravel, though many of the
stones exceed a yard solid.
The straths or valleys of our larger rivers, in their passage through
the alpine country, are generally {84} occupied, for several hundred
feet of perpendicular altitude up the slope, by gravel, which covers
the primitive strata to considerable depth, especially in the eddies of
the salient angles of the hill. Every description of tree grows more
luxuriantly here than in any other situation of the country; the causes
of this are, _1st_, The open bottom allowing the roots to penetrate
deep, without being injured by stagnant moisture; _2d_, The percolation
of water down through the gravel from the superior hill; _3d_, The
dryness of the surface not producing cold by evaporation, thence the
ground soon heating in the spring; _4th_, The moist air of the hill
refreshing and nourishing the plant during the summer heats, and
compensating for the dryness of the soil; _5th_, The reverberating of
the sun’s rays, between the sides of the narrow valley, thus rendering
the soil comparatively warmer than the incumbent air, which is cooled
by the oblique currents of the higher strata of air, occasioned by the
unequal surface of the ground. This comparatively greater warmth of the
ground, when aided by moisture, either in the soil or atmosphere, is
greatly conducive to the luxuriancy of vegetation.
_Firm dry clays and sound brown loam._—Soils well adapted for wheat and
red clover, not too rich, {85} and which will bear cattle in winter,
are generally congenial to the larch.
_All very rough ground, particularly ravines, where the soil is
neither soft sand nor too wet; also the sides of the channels of
rapid rivulets._—The roots of most trees luxuriate in living or
flowing water; and, where it is of salubrious quality, especially when
containing a slight solution of lime, will throw themselves out a
considerable distance under the stream. The reason why steep slopes,
and hills whose strata are nearly perpendicular to the horizon, are so
much affected by larch and other trees, is, because the moisture in
such situations is in motion, and often continues dripping through the
fissures throughout the whole summer. The desideratum of situation for
larch, is where the roots will neither be drowned in stagnant water in
winter, nor parched by drought in summer, and where the soil is free
from any corrosive mineral or corrupting mouldiness.
Larch, in suitable soil, sixty years planted, and seasonably thinned,
will have produced double the value of what almost any other timber
would have done; and from its general adaptation both for sea and land
purposes, it will always command a ready sale.
{86} CLASS II. SOILS AND SUBSOILS WHERE LARCH TAKES DRY ROT.
_Situations (steep slopes excepted) with cold till subsoil, nearly
impervious to water._—The larch succeeds worst when moorish dead
sand alone, or with admixture of peat, occupies the surface of these
retentive bottoms. Where the whole soil and subsoil is one uniform,
retentive, firm till, it will often reach considerable size before
being attacked by the rot. When this heavy till occupies a steep slope,
the larch will sometimes succeed well, owing to the more equable supply
of moisture, and the water in the soil not stagnating, but gliding down
the declivity.
In general, soils whose surface assumes the appearance of honeycomb
in time of frost, owing to the great quantity of water imbibed by
the soil, will not produce large sound larch. More than half the low
country of Scotland is soil of this description.
_Soft sand soil and subsoil._—Sand is still less adapted for growing
larch than the tills, the plants being often destroyed by the summer’s
drought before they attain size for any useful purpose: the rot also
attacks earlier here than in the tills. It appears that {87} light
sand, sloping considerably on moist back-lying alpine situations,
covered towards the south by steep hill, will sometimes produce
sound larch; whereas did the same sand occupy a dry front or lowland
situation, the larch would not succeed in it. The same moist back
situation that conduces to produce sound larch in light dry soils, may
probably tend to promote rot in the wet. The moisture and the less
evaporation of altitude diminishing the tendency to rot in dry light
sand, and increasing it in wet till. Larch will sometimes succeed well
in sharp dry alluvial sand left by rivulets.
_Soils incumbent on brittle dry trap, or broken slaty
sandstone._—Although soil, the debris of trap, be generally much better
adapted for the production of herbaceous vegetables than that of
sandstone or freestone, yet larch does not seem to succeed much better
on the former than the latter. The deeper superior soils, generally
incumbent on the recent dark red sandstone, are better suited for larch
than the shallow inferior soils incumbent on the old grey and red
sandstone.
_Ground having a subsoil of dry rotten rock, and which sounds hollow to
the foot in time of drought._
_Rich deaf earth, or vegetable {88} mould._—Independently of receiving
ultimate contamination from the putrid juices or exhalations of this
soil, the larch does not seem, even while remaining sound, to make so
much comparative progress of growth, as some of the hard wood trees, as
elm, ash, plane.
_Black or grey moorish soils, with admixture of peat-moss._
Although the soils specified in this class will not afford fine large
larch for naval use, yet they may be very profitably employed in
growing larch for farming purposes, or for coal-mines, where a slight
taint of rot is of minor importance. The lightness of larch, especially
when new cut (about one-third less weight than the evergreen coniferæ),
gives a facility to the loading and carriage, which enhances its value,
independent of its greater strength and durability. Those larches in
which rot has commenced, are fully as suitable for paling as the sound:
they have fewer circles of sap-wood, and more of red or matured. When
the rot has commenced, the maturing or reddening of the circles does
not proceed regularly, reaching nearest the bark on the side where the
rot has advanced farthest.
A great amelioration of our climate and of our soil, and considerable
addition to the beauty and salubrity of the country, might be
attained by {89} landholders of skill and spirit, did they carry
off the noxious moisture, by sufficient use of open drainage, from
their extensive wastes of mossy moors and wet tills, which are only
productive of the black heath, the most dismal robe[21] of the
earth, or rather the funeral pall with which Nature has shrouded her
undecayed remains. This miserable portion of our country, so dreary
when spread out in wide continuous flats, and so offensive to the eye
of the traveller, unless his mind is attuned to gloom and desolation,
lies a disgrace to the possessor. Were a proper system of superficial
draining executed on these districts, and kept in repair, most of our
conifers, particularly spruce and Scots fir, with oak, beech, birch,
alder, and, in the sounder situations, larch, would thrive and come to
maturity, ultimately enhancing the value of the district an hundred
fold. This could be done by fluting the ground, opening large ditches
every 30, 50, or 100 yards, according to the wetness or closeness of
the subsoil—the deeper, the more serviceable both in efficacy and
distance of drainage. These flutes should stretch across the slope with
just sufficient declivity to allow the {90} water to flow off easily,
The excavated matter should be thrown to the lower side; and when the
whole, or any part, of the excavation consists of earth or gravel, it
ought to be spread over the whole mossy surface, whether the field
be morass or drier hill-peat: this would be useful in consolidating
it, and in preventing too great exhaustion of moisture in severe
droughts, from which vegetation in moss-soil suffers so much. Even
though planting were not intended, this fluting and top-dressing would
facilitate the raising of the gramineæ. These ditches, when the ground
is not too stoney, or too moist, or containing roots, might be scooped
out, excepting a little help at the bottom, by means of a scoop-sledge,
or levelling box, worked by a man and two horses, the surface being
always loosened by the common plough: one of these will remove earth as
fast as twenty men with wheelbarrows.
ON BENDING AND KNEEING LARCH.
We cannot too forcibly inculcate the urgent necessity of attending to
the bending of the larch: for our country’s interest, we almost regret
we cannot compel it. In all larch plantations, in proper {91} soil,
not too far advanced, and in all that may hereafter be planted, a
proportion of those intended to remain as standards should be bended.
The most proper time for this would perhaps be May or June, before the
top-growth commences, or has advanced far; the best size is from three
feet high and upwards. The plants should be bent the first season to an
angle of from 40° to 60° with the horizon, and the next brought down
to from 10° to 60°, according to the size of the plant, or the curve
required,—the smallest plants to the lowest angle.
From experience we find that the roots of larch form the best of all
knees; they, however, might be much improved by culture[22], although
it does not {92} seem as yet to have been attempted or thought of. To
form the roots properly into knees, should the plants be pretty large,
the planter ought to select those plants which have four main roots
springing out nearly at right angles, the regularity of which he may
improve a little by pruning, and plant them out as standards in the
thinnest dryest soil suited for larch, carefully spreading the roots to
equal distances and in a horizontal position. To promote the regular
square diverging of these four roots, he should dig narrow ruts about
a foot deep and three feet long out from the point of each root, and
fill them in with the richest of the neighbouring turf along with a
little manure. When the plants are small, and the roots only a tuft of
fibres, he should dig two narrow ruts about eight feet long crossing
each other at the middle at right angles, fill these as above, and put
in the plant at the crossing: the rich mould of the rotted turf and its
softness from being dug, will cause the plant to throw out its roots in
the form of a cross along the trenches. When the plants have reached
five or six feet in height, the earth may be removed a little from
the root, and, if more than one stout root leader have run out into
any of the four trenches, or if any have entered the unstirred earth,
they ought all to be cut excepting one, the stoutest {93} and most
regular in each trench. In a few years afterwards, when the plants have
acquired some strength, the earth should be removed gradually, baring
the roots to from two to five feet distance from the stool, or as far
as the main spurs have kept straight, cutting off any side-shoots
within this distance, should it be found that such late root-pruning
does not induce rot. This process of baring the roots will scarcely
injure the growth of the trees, as the roots draw the necessary pabulum
from a considerable distance, nor, if done carefully, will it endanger
their upsetting; and the roots, from exposure to the air, will swell
to extraordinary size[23], so as to render them, ere long, the firmest
rooted trees in the wood. The labour of this not amounting to the
value of sixpence each, will be counterbalanced thrice {94} over by
the ease of grubbing the roots for knees; and the whole brought to the
shipwright will produce more than double the price that the straight
tree alone would have done.
_The forester should also examine and probe the roots of his growing
larch, even those of considerable size, in sound ground; and when
several strong horizontal spurs, not exceeding four, are discovered
nearly straight, and from two to five feet long, he ought to bare these
roots to that distance, that they may swell, carefully pruning away any
small side-roots, and reserve these plants as valuable store_, taking
good heed that no cart-wheel in passing, or feet of large quadruped,
wound the bared roots. In exposed situations the earth may be gradually
removed from the roots.
The rot in larch taking place in the part appropriate to knees, the
forester cannot be too wary in selecting the situations where there is
no risk of its attack, for planting those destined for this purpose. It
is also desirable, if possible, to have the knee timber in ground free
of stones or gravel, as the grubbing in stoney ground is expensive, and
the roots often embrace stones which, by the future swelling of the
bulb, are completely imbedded and shut up in the wood, particularly
in those places between the spurs {95} where the saw section has to
divide them for knees. Were the roots carefully bared at an early
period, it would tend to prevent the gravel from becoming imbedded in
the bulb. Nothing can be more annoying to the shipwright, when he has
bestowed his money, ingenuity, and labour, upon an unwieldy root, and
brought his knees into figure at the cost of the destruction of his
tools by the enveloped gravel, to discover stains of incipient rot
which renders it lumber.
This plan of baring the roots might be extended to oak trees for knees,
baring and pruning about a foot out from the bulb annually. By exposure
to the air, the timber of the root would mature and become red wood
of sufficient durability. When covered with earth, the root of the
oak remains white or sap wood, and soon decays after being dug up,
the matured wood of the stem scarcely extending at all underneath the
surface of the ground. The roots of the pine tribe are the reverse of
this, at least the bulb and the spurs near it, are the best matured,
reddest, toughest, most resinous, part of the tree. It is probably
unnecessary to observe, that it would be folly to remove the earth from
the bulb of trees in situations where water would stand for any length
of time in the excavation. {96}
_Larch knees are possessed of such strength and durability, and are of
such adaptation by their figure and toughness, that were a sufficient
quantity in the market, and their qualities generally known, we
believe that none else would be used for vessels of any description of
timber—even for our war-navy of oak._ In America, where it is difficult
to procure good oak knees in their close forest, it is customary to
use them of spruce roots even for their finest vessels. The knees of
vessels have a number of strong bolts, generally of iron, passing
through them to secure the beam-ends to the sides of the ship. Larch
knees are the more suited for this, as they do not split in the driving
of the bolts, and contain a resinous gum which prevents the oxidation
of the iron.
As the larch, unlike the oak, affords few or no crooks naturally,
excepting knees, the artificial formation of larch crooks is of the
utmost consequence to the interest of the holders of larch plantations
now growing. In order to obtain a good market for their straight
timber, it is absolutely necessary to have a supply of crooks ready
as soon as possible to work the straight up. This would increase the
demand, and thence enhance the price of the straight more than any one
not belonging to the craft could {97} believe. In good soil many of
the crooks would be of sufficient size in twenty years to begin the
supply, if properly thinned out. In a forest of larch containing many
thousand loads, and which had been untouched by any builder, we have
seen the greatest difficulty in procuring crooks for one small brig.
It is only on very steep ground, and where the tree has been a little
upset after planting, that any good crooks are found. From the rather
greater diameter required of larch timbers, and also from the nature of
the fibre of the wood, we should suppose that steam bending of larch
timbers would scarcely be followed, even as a _dernier ressort_.
Larch, from its great lateral toughness, particularly the root, and
from its lightness, seems better adapted for the construction of
shot-proof vessels than any other timber; and opposed _end-way_ to shot
in a layer, arch fashion, several feet deep around a vessel, would
sustain more battering than any other subject we are acquainted with,
metal excepted. Were the part above water of a strong steam-vessel,
having the paddles under cover, a section of a spheroid or half egg
cut longitudinally, and covered all around with the root cuts of larch
five or six feet deep with the hewn down bulb, external; well supported
{98} inside, having nothing exposed outside of this arch, and only a
few small holes for ventilators and eyes; there is no shot in present
naval use that would have much impression upon it. Had such a vessel
a great impelling power, and a very strong iron cutwater, or short
beak wedge-shaped (in manner of the old Grecian galleys), projecting
before the vessel under water, well supported within by beams radiating
back in all directions, she might be wrought to split and sink a fleet
of men-of-war lying becalmed, in a few hours. This could be done
by running successively against each, midships, and on percussion
immediately backing the engine, at same time spouting forth missiles,
hot water, or sulphuric acid from the bow to obstruct boarding; but
even though the external arch were covered with assailants like a
swarm of bees, they would be harmless, or could be easily displaced.
To prevent combustion by red hot shot, the larch blocks, after drying,
might have their pores filled by pressure with alkali. However, the
employment of bomb-cannon about to be introduced in naval warfare,
throwing explosive shot, regulated with just sufficient force to
penetrate without passing through the side of the opposed vessel, will
render any other than metallic defensive cover ineffectual; but {99}
this circumstance will, at the same time, completely revolutionize sea
affairs, laying on the shelf our huge men-of-war, whose place will be
occupied with numerous bomb-cannon boats, whose small size will render
them difficult to be hit, and from which one single explosive shot
taking effect low down in the large exposed side of a three decker will
tear open a breach sufficient to sink her almost instantly. _For the
construction of these boats, larch, especially were a proportion bent,
would be extremely suitable, and thence larch will probably, ere long,
become our naval stay._
Larch has been used in the building-yards of the Tay for 20 years back;
and there is now afloat several thousand tons of shipping constructed
of it. The Athole Frigate built of it nearly 12 years ago, the Larch, a
fine brig built by the Duke of Athole several years earlier, and many
other vessels built more recently, prove that larch is as valuable
for naval purposes as the most sanguine had anticipated. The first
instance we have heard of British larch being used in this manner, was
in a sloop repaired with it about 22 years back. The person to whom it
had belonged, and who had sailed it himself, stated to us immediately
after its loss, that this sloop had been built of oak about 36 years
before; that at 18 years {100} old her upper timbers were so much
decayed as to require renewal, which was done with larch; that 18 years
after this repair this sloop went to pieces on the remains of the
pier of Methel, Fifeshire, and the top timbers and second foot-hooks
of larch were washed ashore as tough and sound as when first put into
the vessel, not one spot of decay appearing, they having assumed the
blue dark colour which some timber acquires in moist situations, when
it may be stiled _cured_; being either no longer liable to the putrid
change constituting dry rot, or which forms timber into a proper
soil for the growth of dry rot; or, from this blueness caused by the
union of the tannin with iron acting as a poison on vegetation: this
blueness, resulting from some alteration in the balance of affinities,
occurs chiefly in timber containing much of the tannin principle, in
which larch abounds. The owner of a larch brig who had employed her
for several years on tropical voyages, also assures us that the timber
will wear well in any climate, and that he would prefer larch to any
other kind of wood, especially for small vessels; he also states that
the deck of this brig, composed of larch plank, stood the tropical heat
well, and that it did not warp or shrink as was apprehended.
From the softness of the fibre and want of {101} density of the larch,
we would not deem it suitable for planking vessels beyond the size
of ordinary merchantmen, say 500 tons, as in the straining of very
large vessels, when the greatest force comes upon the outward skin,
the fabric of the wood might crush before it, along the edge of the
plank, and throw (chew) the oakum. In ordinary sized vessels, however,
larch plank retains the oakum better than oak, from greater lateral
elasticity. For the purpose of timbers, if root-cuts[24], and properly
bent, we would think larch suitable to the largest class of vessels;
as, though light, it is tough and quite free from knot, crack, or
cross-grain, which is so common in oak, and which occasions dense old
oak in large masses to give way at once, before a shock or strain,
the hardness and unyielding nature of the fibre concentrating the
whole dirupting impetus to one point. Larch may also be advantageously
employed in the ceiling or inside skin of the part of war vessels
above water: shot bores it, comparatively, like an auger,—thence the
structure will endure longer under fire, and life be much economized.
In all places where larch has become known, it has completely
superseded other timber for {102} clinker-built boats, surpassing all
others in strength, lightness, and durability. For this purpose, young
trees of about 9 inches diameter, in root-cuts from 10 to 20 feet in
length, with a gentle bend at one end, such as the larch often receives
from the south-west wind, are the most suitable. The log should be
kept in the bark till used, and in dry weather the boards put upon the
boat’s side within two or three days from being sawn out, as no timber
we are acquainted with parts sooner with its moisture than larch; and
the boards do not work or bend pleasantly when dry. When dried, the
thin larch board is at once strong, tough, durable, and extremely
light. The tough strength, almost equalling leather, is owing to the
woven or netted structure of the fibre of the wood, entirely different
from the pine, whose reedy structure runs parallel with very slight
connecting or diverging fibres. It is very difficult to split larch
even by wedges.
For rural purposes generally, larch is incomparably the best adapted
timber, especially for rail or fence, or out-door fabric exposed
to wind and weather. It is also getting into use for implements of
husbandry, such as harrows, ploughs, and carts. We have seen a larch
upright paling, the timber of which, with the exception of the large
charred posts, {103} had only been eight years in growing, standing a
good fence, sixteen years old, decked out by moss and lichen in all the
hoary garniture of time.
In the construction of buildings, larch is valuable only for the
grosser parts, as beams, lintels, joists, couples. For the finer
boarded part, it is so much disposed to warp, and so difficult to be
worked, as generally to preclude use. It is, however, asserted that if
larch be seasoned by standing two years with the bark stripped from
the bole before being cut down, that the timber becomes manageable for
finer house work.
Although larch timber be extremely durable in exposed situation, yet
it yields to the depredations of insects fully as soon as any pine
timber in close houses. We have proof of it in house-furniture about 50
years old, but it is considerably moth-eaten by apparently a smaller
insect than common. Larch stools also disappear in forests sooner than
the stools of Scots fir, being eaten by a species of beetle; and the
sea-worm devours larch in preference to almost any other wood.
We have looked over some experiments conducted at Woolwich, in trial
of the comparative strength of larch and other fir timber, where the
larch is stated inferior to Riga and Dantzic fir, Pitch pine, {104}
and even Yellow pine. Larch, in the districts of Scotland where it
is grown and much in use, is universally allowed to be considerably
stronger than other fir; and the sawyers of it have one-fourth more pay
per stated measure. We, ourselves, have had considerable experience
of the strength of larch applied to many purposes, and have found it
in general much superior in strength to other fir. We have known a
crooked topmast of this timber, to which the sailors bore a grudge,
defy their utmost ingenuity to get carried away. We once had four
double horse-carts, made (excepting the wheels) of peeled young larch
of rather slow growth, for the carriage of large stones; these, by
mistake, were made very slight, so light, that, without the wheels, a
man could have carried one of them away. When we saw the first loading
of stones nearly a ton weight each, two in each cart, and the timber
yielding and creaking like a willow-basket, we did not expect they
would have supported the weight and jostlings of a rugged road many
yards; yet they withstood this coarse employment for a long time. The
timber of larch near the top of the tree is, however, very inferior and
deficient in toughness; and it is not improbable that the experiments
above alluded to at Woolwich had been made with larch {105} timber
deficient in strength from being a top. White larch has comparatively
smaller and more numerous branches than any other of the Coniferæ;
consequently the timber is freer of large knots, and has more equable
strength, as well in small spars as when large and cut out into joists
and beams, provided the timber be not too far up the tree. _Larch,
however, compared with pines and firs, has the timber much stronger
when young, and several inches or below a foot in diameter, than when
old and large_: this may partly be owing to its deficiency in resinous
deposit.
ENDNOTES TO PART II.
[10] We have often preferred the terms kind, breed, family, individual,
to genus, species, variety, subvariety, as the former seem less
definite. Were nature true to the latter classification as employed by
botanists, it would be convenient.
[11] In those we observed, we considered this last circumstance had a
considerable share as a predisposing cause of the attack of the worm.
Forests of _Pinus sylvestris_ are sometimes destroyed by insects under
the bark, in cases where it is difficult to decide whether external
circumstances, such as a dry warm season, has been promotive of the
increase of the insect itself, or has induced some disorder in the
plant, rendering the juices more suitable aliment to the worm.
[12] Some nautical or technical terms have unavoidably crept into
this work; we shall not presume to think any explanation necessary:
Britannia would blush _jusqu’au blanc des yeux_, to the _tips_ of the
fingers and toes, did she think it were doubted that any of her sons,
not doomed to unceasing mechanical labour, were unacquainted with these.
[13] It is termed by our professors _Salix fragilis_, or Crack Willow,
from the small branches breaking easily at the junction of the annual
growth—or, perhaps, Crack Willow, from the branches breaking with
considerable report; or from the wood, while burning, frequently
detonating or crackling, from the expansion of some aërial fluid within
the fibres. Though named by their sapience _fragilis_, it is not weaker
than other large growing willows, but stronger and denser; and, being
harder in the small branches, they do not bend, but break when their
bark and alburnum is driest, in winter. The timber is superior to that
of _Salix alba_, or of any other large growing willow we are acquainted
with, and is sufficiently pliant and tough.
[14] Red Canadian pine is generally termed _Pinus resinosa_; but as
it is not so resinous as several other kinds, we consider _Pinus
rubra_ (_rubra_ from the colour of stem and also of timber), which is
sometimes used, more suitable. The pitch pine of the American United
States should be _Pinus resinosa_.
[15] We think that in mankind the variations of the children of the
same parents do not soften entirely—there would seem to be certain
types or nuclei both of appearance and temperament around which
external and internal character vibrates.
[16] The Canadian red pine resembles P. sylvestris or Norway pine so
much, that it is usually styled Norway pine by the settlers: Though
different, it is so nearly allied to P. sylvestris, that we consider
the number of sap-growths may be referred to the climate and soil, and
not to the kind,—that is, that, were it grown in Britain, if it did not
at first, it would in the course of time come to have fewer sap-growths.
[17] Our common larch, like almost every other kind of tree, consists
of numberless varieties, which differ considerably in quickness of
growth, ultimate size, and value of timber. This subject has been
much neglected. We are, however, on the eve of great improvements in
arboriculture; the qualities and habits of varieties are just beginning
to be studied. It is also found that the uniformity in each kind of
wild growing plants called _species_, may be broken down by art or
culture, and that when once a breach is made, there is almost no limit
to disorder; the _mele_ that ensues being nearly incapable of reduction.
[18] There is yet no sufficient data for the term alpine plant, but
with reference to latitude. The influence on vegetables, arising from
rarefaction and diminution of pressure of atmosphere, from difference
of stimulus of solar ray—when the entire ray of light, heat, and
chemical power, though less intense, is radiated fresh, and not much
broken or modified by refraction and reflection, and heat communicated
more in proportion by radiation than by contact of heated air; or
from difference of electric or galvanic or other meteoric impression
connected with altitude or ranges of mountains, or with primary rocks
or more upright strata, has not been made the subject of research, at
least has not been sufficiently investigated by any naturalist.
[19] When water is stationary, either in the pores of the soil or by
itself, if the temperature be not very low, a slight putrefaction
generally commences, aided by the dead vegetable or animal matter
contained in the soil or the water; and it is only the more robust
aquatic vegetables whose juices are not corrupted, from their roots
being soaked in this tainted fluid. It would appear, too, that the
aqueous part of the atmosphere is also susceptible of the same putrid
changes, although in general the putrescency may have commenced before
the evaporation. This condition of the aqueous part of the atmosphere
is a disposing cause to blight or mildew in vegetables, and remittent,
intermittent, and putrid fevers in man. Mill-ponds are notorious both
for mildew and agues.
[20] We have had no experience of larch, excepting very young, growing
on chalk and its affinities. We are told there are a few instances
where larch has reached 50 years in these calcareous soils, some
distance south of London. This merits attention.
[21] “Oh! the bonny blooming heather.”—“Man has spoken evil things of
the sun, of love, and of life.”
[22] As we held this plan of forming larch knees, and of bending
larch, of considerable importance, we some time ago presented it in
manuscript, along with some other matter, to the Highland Society
of Scotland. Tiring, however, of the delay of examination, perhaps
unavoidable in their official departments, and from some improvements
occurring to us during the delay, we requested it back. We now present
it under this more convenient form to the Society, and hope they
will find the examination or perusal of it printed, not quite so
impracticable as when in manuscript. It will afford us pleasure to
know that this useful Society approves, and that the members who have
opportunity are setting about following our directions. We especially
recommend to them to probe the roots of their growing larch, and to lay
bare those fitted for knees.
[23] The landlord agriculturist is sufficiently aware of the influence
of the baring the upper part of the root of turnip, while the plant
is young, in extending the future growth of the bulb, and that a dry
situation gives most root in proportion to stem. These are general laws
in vegetation. There are few observers who have not remarked the very
large size which roots have attained when the trees have originally
been planted on dikes, and the dike earth removed, leaving the roots
bare. Should any person examine the very great difference of thickness
between the upper and lower part, from the heart of a root near the
bulb, he will at once discover the influence of exposure to the air and
freeness from pressure in promoting the swelling.
[24] As you ascend the tree the timber deteriorates greatly.
{106} PART III.
MISCELLANEOUS MATTER CONNECTED WITH NAVAL TIMBER.
NURSERIES.
Much of the luxuriance and size of timber depending upon the particular
variety of the species, upon the treatment of the seed before sowing,
and upon the treatment of the young plant, and as this fundamental
subject is neither much attended to nor generally understood, we shall
take it up _ab initio_.
The consequences are now being developed of our deplorable ignorance
of, or inattention to, one of the most evident traits of natural
history, that vegetables as well as animals are generally liable to
an almost unlimited diversification, regulated by climate, soil,
nourishment, and new commixture of already formed varieties. In those
with which man is most intimate, and where his agency in throwing
them from their natural locality and dispositions has brought out
this power of diversification in stronger shades, it has been forced
upon his notice, as in man himself, in the dog, horse, cow, sheep,
poultry,—in the apple, {107} pear, plum, gooseberry, potato, pea,
which sport in infinite varieties, differing considerably in size,
colour, taste, firmness of texture, period of growth, almost in
every recognisable quality. In all these kinds man is influencial in
preventing deterioration, by careful selection of the largest or most
valuable as breeders; but in timber trees the opposite course has
been pursued. The large growing varieties being so long of coming to
produce seed, that many plantations are cut down before they reach this
maturity, the small growing and weakly varieties, known by early and
extreme seeding, have been continually selected as reproductive stock,
from the ease and conveniency with which their seed could be procured;
and the husks of several kinds of these invariably kiln-dried[25], in
order that the seeds might be the more easily extracted! May we, then,
wonder that our plantations are occupied by a sickly short-lived puny
race, incapable of supporting existence in situations where their own
kind had formerly flourished—particularly evinced in the genus {108}
Pinus, more particularly in the species Scots fir; so much inferior
to those of Nature’s own rearing, where only the stronger, more hardy,
soil-suited varieties can struggle forward to maturity and reproduction?
We say that the rural economist should pay as much regard to the breed
or particular variety of his forest trees, as he does to that of his
live stock of horses, cows, and sheep. That nurserymen should attest
the variety of their timber plants, sowing no seeds but those gathered
from the largest, most healthy, and luxuriant growing trees, abstaining
from the seed of the prematurely productive, and also from that of
the very aged and over-mature; as they, from animal analogy, may be
expected to give an infirm progeny, subject to premature decay.
As, from many facts, a considerable influence is known to result in
several vegetables from drying severely the seeds from whence they
had sprung[26],—from exposure of these seeds to the sun and air,—from
long keeping, or from injury by mould or {109} impure air, which all
tend to shorten the life of the resulting individual, to accelerate
the period of its seeding, and to increase its reproductiveness; the
nurseryman should pay the utmost attention to the seeds he makes use
of, procuring them as recent as possible, and preserving them in
well-aired lofts, or under sheds, and also retaining them in the husks
till the time of sowing: the superior germinating power of the seed
thus treated will repay this attention.
From facts we are also assured, that, in some hard wood kinds,
and also in the Coniferæ, the hanging of the growth of the young
plant, the spindling up in the seed-bed, or injudicious deterring
treatment afterwards, have a tendency to injure the constitution of
the individual, inducing premature seeding, and diminutive old age;
and also, that when plants, especially of some size, of these kinds
of trees have their roots much broken, the secondary or new roots
often partake something of the nature of the infirm runners, which,
in most kinds of trees, are thrown out by layers,—the resulting tree,
as in the case of those from layers in fruit trees being dwarfish,
sooner exhausting itself by reproduction, and sooner decaying. For
distinctness, we shall recapitulate: {110}
That the seed be from the largest, hardiest variety of tree in
luxuriant growth.
That the seed be recent, and carefully preserved in husk till sowing,
and extracted from the husk or cone without artificial drying.
That the nursery be in an open, rather exposed situation,—most eligible
without shelter either of tree, hedge or wall, of rather light dry soil
of ordinary quality, of dry climate, and, in preference, soil naturally
good to that made so by high manuring.
That the plants be not too close, nor remain too long in the seed-bed;
that they be extricated without much fracture of root, and be replanted
in wide rows, with good space between the plants in the row, keeping
the roots as superficially extended as they will thrive, and without
doubling the main root up to the surface of the ground.
That the plant receive no pruning, excepting in the case of more than
one leader appearing, or feeder unproportionally extended; and no
root-section, in order to retard its growth, or increase the number of
root-fibres; and that its ultimate removal be accomplished without much
fracture of root or branch.
By exposed situation of nursery, ordinary quality of soil, and much
room in the seed-bed and rows, we {111} shall have plants with firm
fibre and hardy constitution, with thick juicy bark, thick stem at the
surface of ground, and numerous feeders all the way down the stem.
Roots are most easily extricated from light soil, and with least
fracture. They are large in proportion to stem in dry soil and climate,
and when they are situated near the surface of the ground.—A healthy
growing plant, of firm fibre, large root, and sturdy short stem of one
leader and numerous feeders, is the great desideratum: a large root is
the more desirable, as a considerable part of it is generally broken
off in transplanting, rendering it disproportioned to the top, which,
in consequence, either languishes, or receives deterring cropping.
We consider, that a tree grows more luxuriantly, acquires larger size,
and is much longer of reaching senility, when it is furnished with
several large roots, say one or two to each of the cardinal points,
extending horizontally out with bold leaders, than when numerous small
rootlets diverge in all directions from the bulb, as is the case
in some kinds when much fracture of root takes place from frequent
removals, or, when the nursery is of moist or mossy soil, the plants
being removed when of considerable size. We have cut down old stunted
hard wood trees having extremely numerous crowded roots, all {112}
engrafted into a matted net throughout the soil near the bulb, and
without any strong extended leaders. We attributed this crowded rooting
to the plants having been of considerable size when put in, and losing
their natural leaders; the situation, an avenue exposed to cattle, went
to confirm the probability that the defect of the rooting had been
owing to the largeness of the plants.
When a tree is supplied by numerous, consequently small and not
wide-extending roots, as the tree acquires size, the wide spreading
branches and leafy top shed off the rain and dews from the space
occupied by these roots, very few of them extending beyond this shade;
at the same time, this narrow space becomes soon exhausted of the more
particular pabulum necessary to the kind of plant, the exhaustion
being accelerated by the dryness. This dryness and exhaustion of the
soil very soon show their effects aloft; the living hark of the tree
becomes covered from its connexion with the air, and constricted by a
thick hard dead crust, which, with the consequent very thin alburnum
affording an inefficient communication between the supply and demand,
react to impair the general vigour, and particularly to impede the
descent of the proper sap necessary to the enlargement and further
extension of the roots. The buds {113} not receiving sufficient supply
of root-moisture, instead of pressing on to new formation of wood, only
find enough to burgeon out into flower-buds, which the following season
drain the tree by reproduction; this fruit-bearing alternates with
periods of exhaustion, when the buds have not even supply sufficient to
swell into the embryo of flower and seed, but extend only into a few
leaves; and sometimes, in the event of a benign season, the buds may
throw out a small extension of new shoots. The tree progresses very
slowly in thickness of bole all this time, and generally soon falls a
prey to disease. On the other hand, when the tree has its naturally
fine large roots preserved, and is situated in open forest, and mixed
with other kinds, these large roots diverging widely from the tree and
each other, have a much larger less-sought space to forage in; and the
tree enjoying a long period of luxuriant growth before it fall much
into seed-bearing, acquires strength of constitution to thrive and
increase for ages under this drain.
We are satisfied that cutting or fracture of the root-leaders,
especially near the bulb, when they have acquired some size, is
injurious to the extension and longevity of the tree, in pines and most
kinds of hard wood; and that branch-pruning, as generally practised,
is not less pernicious, first, by the {114} derangement which the
plant receives, from the regular connexion between the rootlets and
their affiliated twigs and leaves being destroyed by the section,
and afterwards from the distance between the manufacturing parts,
the leaves and the sources of supply in the ground being unnaturally
extended, especially when the stem is long, slender, and much denuded.
Although we consider severe root fracture at planting pernicious to
some hard wood and resinous trees, yet there are kinds to which it
is advantageous. All plants which grow freely by cuttings, strike
better to have the roots pruned in near to the bulb. Many kinds
of seedling-plants also strike sooner, and throw out stronger new
root-leaders, when the long straggling fibres are cut in a little,
similar to the branches above, which, when over-numerous and slender,
throw out more vigorous shoots by being cropped at planting.
PLANTING.
In regard to planting, soils divide into the _dry_ and the _moist_;
the former require to have the plants put in as soon as possible after
the leaves drop off—at any rate, not to allow February to pass without
completing the planting; excepting evergreens, {115} which should not
be delayed beyond the middle of April. In dry soils, if the expense
be not limited to a very low rate, pit-planting should be adopted,
and the pits are better to be dug some months previous, in order
that the earth may be aërated, and the turf partly rotted. The moist
soils may be divided into those which are much disposed to throw the
plant from the frosts and thaws, and those which are not; the former
consisting of moory, soft, or spongy earth, upon a retentive subsoil;
the latter, of the firmer, more equable loams, clays, and tills. Unless
the plants are large, they should always be slitted into the former
soil, and the work performed as soon as the ground becomes sadded in
spring—as, though the lateness of planting should preclude throwing of
pitted plants the first season, they will often be thrown the ensuing
winter. When plants are very small, they may be put into the latter,
by slitting; but if middle-sized, or large, they are better pitted. It
is of the greatest importance to these moist soils, to have very deep,
open[27] drains executed previous to planting, cutting off all the
springs at their sources, and, if possible, drying the subsoil to such
a degree that water will not stand in the pits. Should this be {116}
accomplished, it is highly advantageous to dig the pits in time for
the excavated clay to have its cohesion broken by frost: the planting
should afterwards be performed exactly at the time when this frosted
mould is sufficiently dry, and no more, to shake conveniently in among
the fibres of the roots, and not to knead into mortar, by the necessary
pressing of the feet. After this pressure, a little of the tenderest of
the soil should be spread loose over the surface, to exclude drought.
Should this dryness of subsoil not be effected, the pits must be dug
in spring, at the time the clay is most friable; that is, between the
moist and dry; and the plants put in immediately, breaking the clay as
fine as possible, and closing it well around the roots. It is better to
delay planting even till May, than to perform it too wet. When planting
is delayed late in spring, the plants should be kept _shoughed_ in the
coldest situation that can be found, at the top of a hill exposed to
the north, or in some cold, damp, back-lying place. Care should also
be taken not to expose them much while planting, as they, especially
if the buds be bursting, very soon wither when root and stem are both
exposed to the sun and dry air. When late planted, they ought always
to be dipped as far up as the branches in a puddle of clay and water:
{117} should they be dipped over head in the puddle, it will not
injure them.
What is of most importance to the success of planting, is to have the
soil put very closely in contact with all the root-fibre, and these
fibres in due natural separation, with a little tender mould on the
surface;—not to have water stagnating around the root, at any rate
during the first spring;—to have the planting done in time, to receive
a good sadding by rain before the spring droughts commence;—to prevent
rank weeds, furze, &c. from smothering the young plants;—and to exclude
or destroy all bestial, as cattle, sheep, rabbits, hares, mice, &c. In
keeping the latter in check, a few families of foxes are very efficient.
FURTHER OBSERVATIONS ON PRUNING.
Every forester is aware, that when feeders are pruned off, they should
be cut away as close as possible to, and without tearing the hole.
To perform this without danger of injury to the tree, when feeders
of considerable size are to be removed, the branch should first be
sawn over at about one foot beyond the intended section, and a second
section then performed at the proper place. This {118} requires a
little more time, but not nearly so much as an inexperienced person
would suppose, as the section a foot out is made very quickly, and the
pruner generally takes as much time to reach the branch as to cut it
off. The neatness and advantage of this method will be acknowledged by
those who have seen it practised, to compensate for the longer time it
requires.
We find the saw, shears, and knife, the best instruments for pruning;
in some cases of difficult approach, the long-handed pruning-iron may
be resorted to. When the lopping is performed by a percussion tool, the
wood and bark at the section is often shattered by the blow, and thence
is less likely to cicatrize soundly; and even when executed in the best
manner, the surface of the section is smooth and hard, consequently
a good conductor of heat, dries much, and thence shrinks and cracks
near the centre of the cut, opening a deep crevice, into which the
rain penetrates, and often rots deep into the stem. When the section
is made by the saw, a slight fibrous clothing is left upon the place,
which in some measure protects the ends of the cut tubes from the frost
and drying air, and excludes the heat; in consequence the wood at the
section does not lose its vitality so far inward, and is not so liable
to shrink {119} and crack in the centre and receive rain. The section
can also generally be made much neater and closer by the saw than by
any other instrument. The common erroneous belief, that a section by
a sharp-edged instrument is less injurious than by the saw, is merely
hypothetical, from wide analogy from animals. The pernicious influence
on the whole individual, received and transmitted by the nerves from
mangled section of animal fibre, is probably entirely awanting in
vegetables; the whole process of life and of cicatrization is also
totally different.
The forester should also be very wary in cutting off a considerable
branch, whose section would incline upwards, as such a section, when it
has received a circle of new bark and wood, forms a cup which receives
and contains rain water, which quickly corrupts the bottom of the cup,
and often rots the centre of the tree down to the ground. It is better
to crop such a branch several feet from the main stem, close by some
small feeder, unless the branch be dead. In pruning, every considerable
section should be as near as possible at right angles with the horizon,
or rather inclining inward below. Of naval timber, the beech is by far
the most likely to take rot by being pruned, and should never have a
large limb cut off, as the divided fibres generally die {120} downward
a number of feet below the section, and soon afterward decay, leaving a
hole in the bole.
As nothing retards the growth of trees more than full flowering and
seeding, if pruning diminish this flowering and seeding, so that the
gain from the prevention of this exhaustion more than counterbalances
the loss of the pruned-off part, the pruning will of course accelerate
the growth of the tree; but the removal of lower branches, although in
the first place promotive of growing buds and extension of the top, in
a year or two longer only tends to throw the tree more into flowering
and seeding. The rich dryness, or want of fluidity of the juices which
occasions flower-buds, is also induced by hot, dry atmosphere, and
short supply of moisture from the roots during the preceding summer,
both of which disposing causes are increased by a long naked stem.
When the proportion of the part above ground of a tree to the roots
is diminished, growing buds result, at least to a certain extent; yet
it would be very difficult to practise a proper system of pruning on
this principle, as the consequent lengthened stem is, in the end,
promotive of flower-buds, especially in dry seasons, and the loss of
feeders might greatly counterbalance the gain from not flowering, did a
succession of wet cold seasons follow. {121}
The season when pruning should be performed, is something dependent
upon the kinds, whether they bleed when pruned in early spring or do
not. Almost any convenient time will suit for pruning the latter, but
we rather prefer March, April, May, June, or autumn after the leaf has
fallen. The former, sycamore, maple, birch, &c. ought either to be
pruned in autumn, or after the buds are beginning to break in spring,
as they bleed and suffer considerable exhaustion when pruned in the
latter part of winter or early spring. From some facts, we consider
that pruning in winter, especially in severe weather, gives a check to
the vigour of the tree; others agree with this.
{122} OBSERVATIONS ON TIMBER.
The quantity of measurable wood of the various timber trees which
a certain extent of adapted ground will carry, when come to full
maturity, or when they may be most profitably felled, and the quantity
that may be thinned out during the maturing, with the time requisite
to bring to value, with the relative selling price per foot, and also
whether the greatest quantity of timber can be grown of one kind or
mixed, are questions of more importance than might be judged, from
the attention paid to the subject. Of our common timber trees, Scots
fir, silver fir, and spruce, larch, pinaster, black Italian poplar,
Salix alba, commonly called Huntingdon willow, red-wood willow, beech,
Spanish chestnut, ash, plane, elm, birch, oak, are here ranked nearly
in the order of quantity of measure which adapted ground in this
country will produce or support; that is, that an acre of close Scots
fir trees, of whatever age, will admeasure more timber than an acre
covered with any other tree of the same size; and a close acre of oaks
less. A little further south, in the temperate zone, the large-leaved
deciduous trees, particularly the {123} elms, acquire thicker and
longer stem, in closer order, in a given time. In this country, in
rich warm situations, this is visible in some degree, both as regards
quantity of timber and quickness of growth, compared with pines. It
would be difficult to state the comparative quickness of growth of
the various timber trees, as so much depends on soil, situation, and
treatment; it also varies considerably at different stages of their
growth. It is well known, that in proper soil, black Italian poplar,
Salix alba, and red wood willow, exceed all others.
As, for naval use, it is not the quickness of growth and bulk of
the timber altogether, but of the matured timber alone, which is of
consequence—we give a view of the number of growths or annual circles
of sap-wood (the useless part), which the main stems of several kinds
of trees presented. Most of those we examined had a greater number
of sap-layers near the top than at a few feet above ground, and the
vigorous branches had generally more than the stem immediately adjacent
to them; the branches with least vigour had fewest sap circles. {124}
_Of Home Growth._
Common oak, some trees 10, others 14, others 18
Spanish chestnut, 2, 5, 6
Scots elm, _U. montana_, 16, 25, 32
English elm, _U. campestris_, 0, 10, 0
Red-wood willow, 8, 14, 0
Laburnum, 3, 5, 0
Wild cherry, _Prunus cerasus_, 16, 24, 0
Black Italian poplar, 9, 0, 0
Scots fir, 20, 30, 40
Pinaster, 0, 10, 0
White larch, free of rot, 5, 12, 18
_Of Foreign Growth._
Memel fir, 0, 43, 0
Red Canadian pine, 0, 100, 0
Yellow Canadian pine, 38, 44, 0
The process of maturing in several did not proceed regularly, some
of the rings being reddened on one side and remaining white on the
other: this did not seem to be influenced by position to south or
north. In the larch, particularly in those trees {125} where the rot
is incipient, this maturing is very irregular, in the view of the
cross section dashing out into angles and irregularities, and being
darker red than in the healthy plants: in those where rot had made
considerable progress, the red-wood was within a circle or two of
the bark. This approach of red-wood to the outside is so regularly
connected with rot, that we needed no other indication of the roots
being unfit for knees, and therefore not worth grubbing, than merely a
slight notch by two cuts of a hatchet.
Those kinds of timber whose matured wood assumes a brown or reddish
colour, are generally much less susceptible of change, either by simple
putrefaction or by attack of fungi, or gnawing of insects, than those
whose matured wood remains of a whitish colour. In many of the latter,
there does not even appear to be any particular change of constitution,
or greater capability of resisting corruption or insects, between the
alburnum and mature wood, although the difference between the two is
generally perceptible when the cross section is drying, and immediate,
as in the brown or red; there being no gradual change or softening in
either between the mature and immature. Although the change in those
which become brown and red does not much affect {126} the hardness or
strength of the timber (mature and immature being nearly equal in these
when dried before corruption injures the latter), yet it materially
influences its nature or quality. We have taken down Laburnum trees in
the round natural form from the roofing of an old building, from which
nearly the whole yellow or sap-wood was eaten away by insects, although
they had not made the least impression upon the brown[28]. {127}
Whether timber be more lasting when cut at one time of the season than
at another, is not yet determined. The matured wood does not seem to be
much affected by the season, continuing nearly equally moist throughout
the year; life or action in it, though not quite, being nearly extinct,
and little or no circulation remaining; yet the matured wood of the
stool of the pine throws out a little resin when the tree is cut
down in summer,—perhaps only a mechanical effect of heat and drying.
Steeping in water for a considerable time is of far more importance
to the duration of timber than any thing depending on the time of the
season when it is cut down; steeping causes some acetous {128} change
in the timber (easily recognisable by the sense of smelling when any
section of it is made), which, judging from the effect the acetous
change has to preserve other vegetable matter from putrefaction, is
probably of considerable use in preserving the timber from decay,
either by rot or worming. The time of cutting, although of considerable
importance to the quality and durability of the sap-wood, appears to be
of little or none to the matured.
The age at which timber may be cut down being uncertain, the
height to which it should be trained up of clear stem is not very
determinable,—say that the trees are to be allowed to stand till
nearly full grown,—as long as the timber continues to retain its
strength and toughness when growing in proper soil, that is for
hard-wood trees 100 years and upwards, and for pines from two to three
hundred. On crowns of eminences and exposed bluffs, particularly when
the latitude or altitude is rather high, the soil inferior, or the
climate arid, from 15 to 30 feet of clear hole may be as much as can
judiciously be attempted; upon plains under common circumstances,
from 30 to 50 feet is an attainable stem; in sheltered dales and
valleys, they may be trained clean, and without branch, from 50 to
70 feet in altitude; and in cases where soil, situation, {129} and
climate, are all propitious, and it is desired that nature’s fullest,
grandest, development should be displayed, from 70 to 150 feet, clear
of branch, maybe gained. Lewis and Clarke describe a spruce, in a
sheltered dell on the river Columbia, which they measured, lying upon
the ground, 312 feet long from root to top. We have little belonging
to earth more sublime, or which bears home to man a deeper sense of
his bodily insignificance, and puny transient being, than an ancient
majestic forest, whose luxuriant foliage on high, seems of itself
almost a firmament of verdure, supported on lofty moss-covered columns,
and unnumbered branched arches,—a scene equally sublime, whether we
view it under the coloured and flickering lights and shadows of the
summer eve and morning, resounding to the song of the wild life which
harbours there,—or under the scattered beams streaming downward at
high noontide when all is still,—or in winter storms, when the wild
jarring commotion, the frightful rending and lashing of the straining
branches, like the arms of primeval giants, contending in their might,
bear accompaniment to the loud roar and bellow of the tempest, forming
a drone and chaunter to which demons might dance.
{130} CONCERNING OUR MARINE, &c.
Can we consider the Briton sane who speaks of bounding this country
to her home resources? Can any one doubt that our name, our wealth,
our power, are not wholly attributable to our _Marine_? Can any one
be ignorant that the superiority of our marine is wholly dependant on
our _foreign trade_, particularly the bulkier part of it, on _foreign
supply_? Does any one dread the necessity of _foreign supply_, from the
foolish fear that it may be cut off by war? Keeping out of view the
argument, that ere the British pride would suffer _other domination
on the waters_, our numbers would be well thinned away, they know
little of the influence of circumstance on man, who do not perceive
that, in the event of free trade, and of the population of Britain
increasing beyond what the country, under the best possible culture,
could support, the very necessity of being mistress of the seas would
make her so. They know little of what Britain is, country and people,
who doubt of her continued supremacy, should she not be ruined,
indeed, by following the narrow selfish {131} views of a party—a
party alike ungrateful[29] for the past, and blind to, or heedless
of, their own ultimate good. The position of Britain,—her stretch
of sea-coast, serrated with harbours,—her minerals, the principle
of mechanical motion, so necessary in the arts,—her navy, docks,
canals, roads, implements, and machinery, so superior to those of the
whole world beside,—her fertile soil,—her capital,—her protection of
property,—her insular situation,—her steady government and consequent
ingress of capital from the continent on any commotion,—her habits
of industry,—her knowledge of trade,—her sciences,—her arts,—her
free press,—her {132} religion[30],—and the stamina and indomitable
spirit of her people. All these, causes and effects combined, brought
into action under a climate the most favourable for developing the
moral and physical energies of man, where the extremes of temperature
neither relax nor chill, where the human muscle and human mind are more
capable of continued strong exertion, and machinery less influenced by
hygrometric and calorific change, than on any other spot of earth. When
all these are condensed into a nucleus of power of so small compass
that one spirit, one interest, may pervade all, but drawing support
by ramifications from every nook of the habitable world, should an
infatuated party not render unavailable these unmatched advantages,
cowardice could not even dream of peril to the supremacy of British
naval power.
Let us continue to extend our foreign intercourse and home
cultivation—let the merchant legislate in affairs of trade—the
landholder in country matters; each in that in which his judgment
has been formed by experience, acting always on the principle that
the general prosperity of the country is the interest {133} of
every class—that, like the branch and the root, their prosperity is
indissolubly combined.
When we view the advantages of Britain—almost to a wish,—when we view
her able and ready to supply the necessities of man in every clime,
in exchange for his superfluities, and to scatter science, morality,
the arts of life, all that conduces to happiness and improvement over
the nations,—when we view all this, being blasted by an exclusive
system of monopoly, of very doubtful advantage to one party of the
nation, and tyrannically oppressive upon all others, can we refrain
from execration? We would desire the casuist to draw a distinction
between the criminality of preventing the operative from exchanging
the produce of his labour (otherwise unsaleable) for cheap food[31],
when his family is famishing; and compelling the labour of the Negro
(whom you support with food) with the whip. Men will be found of a
virtue sufficiently easy to advocate either system. We only wish that
the supporters of {134} monopoly and their abettors were sent off to
some separate quarter of the world with all their beloved restrictions,
duties, tariffs, passports, revenue officers, blockade men, with the
innumerable petty interfering vexatious regulations, and all the
contrivances which surely the devil has invented to repress industry
and promote misery, where they might form an Elysium of their own.
There is nothing more certain, should we by restrictions continue to
banish knowledge, capital, and industry from our shores[32], than that
the Genius of Improvement will fix upon some other place for the seat
of her throne. _Maritime dominion_ will follow in her train; and on
the first war, all exportation of the products of our manufacturers
being at an end, unexampled misery will involve four-fifths of our
population, and an explosion will ensue, from its origin and character
of unparalleled fury, which will sweep to destruction the insane
authors of the calamity—tear to shreds the whole fabric of society—and
give to the winds all the institutions which man has been accustomed to
revere. {135}
* * * * *
It is disgraceful that our MARINE is not directly represented in the
British Parliament. Is it possible that every clown in England, who is
owner of a few acres or miserable hovel, is carried to the poll,—and
that our shipping interest, and brave seamen, to whom the rest of the
nation is indebted “for all they have, and almost all they know,”
are passed over—have not one direct representative—have not even one
direct vote, and that their interest is totally neglected[33]? Will it
be credited that our most sage legislators, as if on purpose to ruin
our marine, have laid on a tax of L. 4 per load (above 1s. 7d. per
solid foot) on oak-plank, and L. 2, 15s. per load on rough oak-timber,
imported from other nations; which, as only a small part of what is
(not of what would be) used, is so derived, at the same time that
it raises the price of the whole[34] nearly 100 per cent., tends
comparatively little to swell the revenue,—nearly the whole of the high
monopoly price reverting to our landholders and our grateful Canadian
{136} colony? As about a load (50 solid feet) of timber is required
for the construction of a ton of trading shipping, this duty, together
with the high duty on hemp, increases the cost of our vessels nearly
L. 4 per register ton, independent of the higher price of building
and sailing them, from other monopolies; and it is only from the very
superior skill, honesty and industry of our seamen[35], that our
shipping, since the peace, under this very great disadvantage, has been
at all enabled to compete with foreign. At Shields and Newcastle a new
merchant-vessel of oak, rigged and ready for sea, uncoppered, can be
purchased for L. 10 per register ton. Were the price, by the removal of
monopoly, reduced to L. 6 per ton, scarcely a foreign bottom, American
excepted, would compete with British, in the carrying trade, or would
enter a British port. Can it be believed that our very liberal late
minister (Mr Huskisson), and our very non-liberal member for Newark
(Mr Sadler), have both made a _full_ exposè of the distresses of our
shipping interest, and not once have adverted to the _cause_ of this,
and of the comparative decline of our naval preponderance—_the very
high duty on the_ {137} _material_? Does our Government perceive the
rapid strides which our rival brothers in America are making to surpass
us in marine—and will it be so besotted as continue laws to the speedy
fulfilment of this?
May we hope that, through the energy of OUR SAILOR KING, Britain will
lead the van in the disenfranchisement of man from the old bondage of
monopoly and restriction—that a more sane system of taxation (a tax on
property) will be adopted, as well as a necessary retrenchment—that the
true interest of Britain will be understood and followed, and a new era
begin. We are sick of the drivelling nonsense of our closet economists
about loss by colonies and foreign connexion. Bonaparte well knew the
value of SHIPS, COLONIES and COMMERCE, and dreaded the power which
eventually wrought his fall. The existence of China depends upon her
Agriculture, and the sovereign devotes a part of his time annually to
the plough. The existence of Britain depends upon her Marine, and the
king should always be bred a sailor—the heir-apparent and presumptive
being always sent to sea. In the case of a female, if she did not take
kindly to the sea-service, a dispensation might be allowed, on her
marrying a sailor, and the foolish law prohibiting our Royal Family
from marrying a Briton be put aside.
ENDNOTES TO PART III.
[25] If the heat and evaporation of a gardener’s pocket for several
days be sufficient to render the seeds of melons and gourds productive
of plants of earlier maturity, that is less disposed to extension and
more to reproduction,—what may be expected from kiln-drying fir-cones?
[26] The full ripening of the seeds of some cultivated varieties
of vegetables, and also the drying of the seeds severely without
artificial heat, are found to have considerable influence upon the
germination of the seeds, and even some impression upon the character
of the resulting plant.
[27] Covered drains are not adapted for woods, as the matted fibres of
the roots, especially of the semi-aquatic trees, very soon enter them
and form obstructions.
[28] Laburnum (Cytisus) is the most valuable timber this country
produces. It is equally deep in colour, and takes as fine a polish as
rose-wood, having also something slightly pellucid in the polished
surface. From its extreme hardness, it is much better adapted for
use than mahogany, not being indented or injured by blows or rough
treatment. We are acquainted with no other timber of home produce so
little liable to decay. The large-leaved variety in rich warm soils
acquires a diameter of a foot or a foot and a-half, and grows rapidly
till it fall into seed-bearing. Its usual very stunted growth is partly
owing to less valuable faster growing trees overtopping it: Were it
planted alone, and trained to proper curve, it might be profitably
reared for the upper timbers (the part where decay commences) of small
vessels: it has the thinnest covering of sap wood of any of our timber
trees. The extreme beauty and richness of its clustered depending
blossoms is a considerable injury to its growth, as it is often broken
and despoiled of the branches on this account. The small-leaved
Laburnum, though producing the most beautiful timber, is of such
puny growth as not to rank as a forest tree. There is a peculiarity,
at least seldom occurring in other trees, attending the growth of
the small-leaved variety: a branch frequently gives up feeding the
connected trunk and roots, drawing supply of nourishment from these
upward, without returning much or any of the digested matter downward.
This branch above the place of the stagnation of the bark vessels
becomes enlarged, running into numerous shoots, which are generally
unnaturally thick and unhealthy, approaching to dropsical—often,
however, beautifully pendant down to the ground, from their weight
and the smallness of the supporting branch. We do not know whether
this is an awkward effort towards increase—that these branches, under
the influence of a not entirely matured instinct or faculty, droop in
search of earth to root, and extend by layers, in conformity to a habit
of some tribes of trees, in which this mode of increase is efficient,
or that it is a disease unconnected with design or final cause. These
overgrown branches of the small-leaved laburnum are generally thrown
out by trees, which, owing to circumstances, are little disposed to
seeding.
[29] Let us compare the wealth of the British landholder with that
of the like grade on the Continent. It is the unrivalled skill and
industry of our manufacturers and traders which have laid every shore
under contribution for the immense riches which has poured in upon our
landholders, and which, from juxtaposition, will continue to do so,
in a certain degree, under the fullest freedom of trade. It is now
absurd to talk of duties on foreign products, to counterbalance home
taxation—taxation now bears lightly on home agricultural production,
more so than in many parts of the Continent, and our manufacturers,
under the same or greater taxation, compete with and outstrip all the
world in cheapness of production.
[30] The dread of change in Catholic countries—the proscription of
almost every new work treating of science—the complete submission of
the mind to the religious authorities, bearded men “becoming little
children” even to the letter—the consequent general abandonment to
sensual enjoyment—the immense number of holidays—and the shoals of
meddling priests, are a great bar to improvement—an insurmountable
one to manufacturing pre-eminence. We need not say that all this is
subordinate to climate. Effect, however, soon turns to cause.
[31] Our industrious operatives, rendered trebly more productive by
recent machinery improvements, fabricate three times more commodity
than our landed and other population can with their present habits
consume. Few other nations can give else but food in exchange for this
overplus; our landholders have enacted laws to exclude food, and our
operatives are being starved down to the requisite number for home
supply.
[32] The same polity under which Britain has acquired supremacy, will
not now serve to continue it. A knowledge of the interests of nations
is abroad, and if we will not suffer our country to be the emporium of
the world, another will.
[33] See App. E.
[34] The price of any article raised at home, when any part requires to
be imported, of course rises to the whole cost (prime cost, duty and
freight) of the foreign.
[35] The chance of loss by wreck, damage from sea-water, and pilfering,
being much less in British than in foreign bottoms, enables the British
to obtain a higher freight than the foreign.
{138} PART IV.
NOTICES OF AUTHORS RELATIVE TO TIMBER.
After throwing together several of our own observations, we bethought
ourselves of examining into the ideas and experience of recent writers
on the same subject. Having taken notes of the more prominent matter
contained in their pages, we believe we shall do the public a service
by printing these notes, accompanied by slight remarks. This may be the
more useful, especially as almost every author has his own particular
mania, which few common readers have sufficient knowledge of the
subject to discriminate from the saner matter: and as, from the nature
of hobbies—from some shrewd enough guesses by the owner that they are
his own undoubted property—and, perhaps, from some misgivings, that
what he advances on these is not perfectly self-evident, he is thence
the more disposed to expatiate upon them, and embellish. The {139}
credulous and inexperienced, partly from this, and partly from the
fascination of the very improbability, rush at once into the snare;
bring the speculations or assertions to practical test; get quickly
disenchanted by realities, and ever after are disposed to treat all
written directions on material science with contempt. We bring forward
these authors in the order of perusal. We have found several remarks
similar to our own; this was to be expected.
{140} I. THE FORESTER’S GUIDE, _by Mr Monteath_.
This volume is the work of a man of some experience, and of
considerable observation and ingenuity, not much assisted by botanical
or physiological science or literary attainment, which he, indeed,
disclaims. His principal forte, and what he seems to have been most
engaged with, is oak-coppice—his besetting sin, cutting and cropping.
His directions on rearing and cutting coppice may be sensible;—those
who wish to practise the sacrilege of destroying young oak-forest, we
refer to him, as we have always had a horror at seeing a beautiful
sapling untimeously cut down, like an American bullock for its hide. At
present, and while peace continues, it is very easy to obtain plenty
of foreign bark, and also oak-timber, for consumption, at a very cheap
rate, for this reason—_and also, because, in the event of war, the
price of these articles would be nearly doubled—we would request the
holders of coppice, and, indeed, of all growing oak-timber, to pause
in their operations of cutting, and not to sacrifice their property
so unprofitably, to their own ultimate disadvantage, and also to the
detriment of {141} the national resources; but immediately to
set about converting their coppice-hags into oak-forest, by careful
thinning and selection_. For performing this, we refer them to Mr
Monteath in person, who seems to comprehend the utility, and to be
pretty well versed in the practice, of thinning; only we would desire
him, in pruning, to attend to the functions of the leaves; that the
more abundant the covering of healthy foliage, the tree will progress
the faster; and that the repeated cutting down of a young plant, year
after year, as he recommends, even sometimes extending it to five
years in succession, will either destroy the plant altogether, or be
extremely injurious to its growth: although, if the plant be stunted,
cutting it down, once, as every body knows, is the plan which should be
adopted with all kinds of our common forest trees—the coniferæ, beech,
and birch, excepted.
Mr Monteath advises a naturalization of young plants, after they are
got from nurseries, in a soil and climate similar to that which they
are ultimately to occupy. We see no necessity for this. All that is
required in a young plant, is, that it be of good variety, of firm
fibre, in a healthy growing state; with a stout stem, in proportion to
the height, {142} with numerous side branches, and with a root rather
large in comparison to the part above ground.
Our author’s mode of preparation of turfy peat-moss soils for planting
we think good, but conveniently applicable in heathy moss ground, only
with the assistance of the late Mr Finlayson’s ingenious device of
the self-clearing plough. At every seven feet of breadth, Mr Monteath
excavates a deep rut, by means of a plough with three coulters and
two mould-boards,—two of the coulters cutting, each, a side of the
rut, the other dividing it in the middle, and the double mould-board
turning out a furrow to each side. He passes this plough twice along
in forming the rut, each time turning out from four to six inches in
depth, so that the whole depth of the rut is about ten inches. These
minor drains communicate with larger ones dug by the spade across the
field. The thrown up slices are then cut into lengths of eighteen
inches, and carefully dried, by turning and by piling a few together,
as openly as possible, that the wind may blow through. A small pile,
about six in number, is then burnt upon the intended site of each tree,
if necessary, aided in the combustion by furze or other fuel; taking
care, by proper regulation of the quantity of fuel, or otherwise, to
prevent the combustion from proceeding too {143} far, and the ashes
from becoming white and light, as in this case a considerable part
of their virtues is dissipated. This ploughing, drying, and burning,
being performed as early in the summer as the weather will permit,
the earth under the ashes is immediately dug over, from two to four
feet in breadth, and mixed with the ashes, and the following spring
the planting is performed. In situations where Mr Monteath’s plough
could not be worked to advantage, these minor drains may be formed by
the spade; and in heathy peat soils, not requiring drains, the burning
of the heathy turfs on the site of the plants might be efficacious in
correcting the tannin, and in reducing and enriching the soil within
the immediate reach of the young plant, which would thus acquire
strength to subdue the more distant part, and gradually reduce and form
the whole into soil capable of affording healthy nourishment.
We also approve of the plan mentioned by Mr Monteath, for covering
with timber, rocks or stony ground, so bare of soil as not to admit of
planting, by means of placing seeds in the crevices, or on the shelves
of the rock, and scraping together a little mould to cover them; or,
when practicable, placing the seeds in the middle of the mould. Here,
however, we think he errs, in recommending the {144} cutting down
of the young resulting shoot, year after year, that the plant may
acquire long roots, extended down the crevices, to give the future
stem stability and sufficient foraging. We would never cut down but
when the plant appeared stunted, and not then in succession, nearer
than three or four years from the last cutting. Those who possess
rocky precipices, so steep or inaccessible that the above method
of our author could not be practised with conveniency, may cause a
quantity of the cheapest seeds of trees be sown down over the top of
the crags during the winter: we would prefer the end of January, as the
mouldering effects of the frost and the rains would cover numbers of
these, so as they would come to vegetate.
Mr Monteath advises, in rearing oak-forest or copse, to put in only
about thirty plants per acre, and by layers from these to cover the
interstices. In order to recommend this practice, he states the
celerity with which these could be extended, layer beyond layer, making
steps, every second season, of eight or nine feet, by relaying the
last layer’s shoots, and he affirms, that a forest could be sooner,
and more economically raised by this means, than by planting the whole
at first. This is sufficiently imaginative. He seems not to be aware
of the fact, that life is {145} very languid, and growth slow, in any
branch horizontally extended, especially when upright stems from the
same root are suffered to remain. He also expects the layer-roots to
become strong and capable to forage for large trees. That they will,
in the oak, ever become so, we think very improbable. Examination
of the roots which proceed from oak-layers would place this beyond
dispute; if they are, as we presume, fibrous and slender, similar to
those produced by apple-layers, no tree or bush of any great size will
result. Large trees, generally, cannot be procured by layers, but only
in those semiaquatic kinds which grow readily by slips. Whether it
may be advantageous to fill up the vacancies of copse by layers, in
preference to seed-plants, experience only can determine. The bark of
trees or bushes raised by layers or cuttings is generally thicker than
that of those raised from seed:—this might balance some deficiency of
the growth in the case of oak-coppice.
Our author advises the cutting off the upper part of spruce-trees on
the outside of plantations, in order that their lower branches may
extend the more, and remain vigorous,—thence affording more adequate
shelter to the within plantation. Perhaps it is quite unnecessary to
guard any person from practising this piece of folly. On the outside
of woods, spruce-firs {146} will retain the branches in vigour,
sufficiently low for all the purposes of shelter: nothing could be more
unseemly than the decapitated trees; and in a few years most of them
would become rotted in the stem, die, and fall down.
From observing, on the western side of Scotland, thriving plantations
exposed to south-west winds and sea-spray, and also to north-east
winds and sea-spray, in woods extending along the western side of
the salt lochs in Argyllshire, our author predicts, that, under his
panacea of repeated cutting down, trees would grow luxuriantly in
exposed situations on the north-eastern margin of our island. We do not
desire to see Mr Monteath’s sanguine hope turned to disappointment,
which a trial would certainly effect. There is something peculiarly
hard and cutting in our _vernal_ north-eastern breeze fresh from
ocean, which withers up the tender spreading leaves of every plant
raised from the ground, and placed in its immediate draught. This is
occasioned as well by a cold moist, as by a cold dry wind, the new
vegetable structure in the developing process, when the tissues of
tubes and cells are only in the state of pulp, and all the molecular
germs floating into figure, under the direction of vital and chemical
impulses and attractions, being very susceptible {147} of derangement.
We attribute this effect on vegetables principally to the coldness and
saline matter. The depressing effect on the spirits or vital energy of
man, occasioned by the eastern breeze, does not appear to be dependent
on the same cause. The great rivers, the Rhine, the Weser, the Elbe,
independent of the English rivers, throw a great quantity of decaying
vegetable matter into the lower part of the German sea, which, being
there only a shallow muddy gulf, may thence have its waters so far
contaminated as to throw off pernicious exhalations. Or, what is much
more probable, the eastern breeze, sweeping along the swamps (at this
time in high evaporation, of malaria) which extend from Holland upward,
and along the whole southern shore of the Baltic, and thence eastward
nobody knows how far, must bear these exhalations, uncorrected, over
the narrow sea which intervenes between these flats and our shores.
It is even likely that a slight diffusion of saline matter from this
gulf, instead of correcting, may have the opposite effect, as a small
quantity of salt tends to promote putrefaction. It is evident that this
miasma-atmosphere, borne across the German sea, is not pernicious to
vegetables; as, when the breeze is not too cold, or too violent, they
progress rapidly in growth, {148} and acquire a deep green colour:
and, on the north-eastern Scotch coast, where timber suffers most, the
breeze has little of that depressive influence on man, although it
may derange his respiratory and transpiratory organs; while down on
the shores of Suffolk and Essex, where the malaria of the breeze is
greatest to man, the exposed trees receive less injury. Yet something
may depend upon the electric state of this air, or upon the greater
pressure of the atmosphere, which, we believe, are connected. On the
exposed east coast, when it is desired to grow timber, we must estimate
the most enduring kind of tree, perhaps sycamore plane, and place it to
seaward, covering it as much as possible by wall, and planting other
kinds under its lee. We have noticed several instances where timber
throve well, without shelter, close by the sea, on our north-east
coast, which we attributed to a diminished draught of the eastern
breeze, owing to the configuration of the adjacent higher country.
Mr Monteath ascribes the sickliness and decay which, in many places,
is perceptible in the timber of narrow belts, to the want of shelter,
and recommends to form belts wider. There is some truth in this, and
the advice is good, although he does not seem to be aware of the
whole cause of the evil. {149} Trees in single rows thrive latterly
much better than in narrow belts, because, from the planting, they
are habituated to open situation, and acquire roots, branches, and
stem, suited to this: whereas trees in narrow belts, from being in a
thicket while young, acquire great length of stem, and roots and tops
unproportionably small; and, when thinned out, and from the narrowness
of the belt, exposed nearly as much, as, though in single row, they
become sickly, from delicacy of constitution unsuited to this exposure,
and from deficiency of roots to draw moisture commensurate to the
increased evaporation. To obviate this evil, resulting from narrow
belts, timely thinning, so as to retain numerous side-branches downward
to the ground, of course, should be adopted. In a drier climate, or in
high and exposed situation, continued forest will have great effect in
promoting the luxuriance and health of timber; but in the southern part
of Scotland, there are few situations, keeping away from high elevation
and the eastern coast, where any of our common trees would prosper in
forest, which would not grow pretty well singly, provided the plant be
allowed from the first to accommodate its figure to the situation.
Mr Monteath’s system of pruning severely while {150} the trees are
young, we think very prejudicial; and his restricting pruning to trees
under 15 or 20 feet in height, equally erroneous. About 15 years ago,
we selected a number of young trees several years planted, and low
and bushy, in an open situation. We treated one half of these in a
manner similar to what our author inculcates, pruning away most of
the lower branches, and also any irregular top ones: and the other
portion, though very bushy, we left to nature’s own discretion, merely
correcting several which threw up more than one leader. The result
has been, that those much pruned up have required constant attention
to the top and repeated pruning, they continuing to break forth into
irregular branches and numerous leaders, and thence have sustained
considerable loss of growth; while those let alone, after hanging
several years in bush fashion, of their own accord have thrown up fine
leaders, which now form beautiful, upright stems, with sufficiency of
regular lateral branches or feeders, requiring little or no attention;
while the original bush at the ground, from the size and overshadowing
of the superior tree, appears now so diminutive as to be unworthy of
notice. We do not mean to inculcate that pruning is superfluous; on the
contrary, when judiciously executed, under regulation of the purpose
for which the {151} particular kind of timber may be required, it is
highly useful: but the cutting off and diminishing the number of lower
feeders, thence deterring the growth of the tree, and encouraging the
superior feeders to push up as leaders; or to increase in size so as to
render their removal, should it be necessary, dangerous to the health
of the tree, and the upper part of the stem useless from large knots
(a practice which in nine cases out of ten is followed), cannot be
sufficiently reprobated. _In pruning, every means should be taken to
increase the number of feeders_, in order that none of them may become
too large; and no healthy regular feeder should be lopped off till the
tree has reached the required height of stem, and a sufficient top
above this for the purpose of growth; at which time the feeders upon
the stem, as far up as this necessary height, may be removed[36].