CHAPTER 10.

Juigalpa.

A Nicaraguan family.

Description of the road from Juigalpa to Santo Domingo.

Comparative scarcity of insects in Nicaragua in 1872.

Water-bearing plants.

Insect-traps.

The south-western edge of the forest region.

Influence of cultivation upon it.

Sagacity of the mule.

THE site of Juigalpa is beautifully chosen, as is usual with the

old Indian towns. It is on a level dry piece of land, about three

hundred feet above the river. A rocky brook behind the town

supplies the water for drinking and cooking purposes. The large

square or plaza has the church at one end; on the other three sides

are red-tiled adobe houses and stores, with floors of clay or red

bricks. Streets branch off at right angles from the square, and are

crossed by others. The best houses are those nearest the square.

Those on the outskirts are mere thatched hovels, with open sides of

bamboo poles. The house I stayed at was at the corner of one of the

square blocks, and from the angle the view extended in four

directions along the level roads. Each way the prospect was bounded

by hills in the distance. North-east were the white cliffs of the

Amerrique range, mantled with dark wood. The intervening country

could not be seen, and only a small portion of the range itself;

framed in, as it were, by the sides of the street. It looked close

at hand, like a piece of artificial rockery, or the grey walls of a

castle covered with ivy. The range to the south-west is several

miles distant; and is called San Miguelito by the Spaniards, but I

could not learn its Indian name.

Our host was a musician, and his wife attended to the guests. As

usual, a number of relations lived with them, including the mother

of our hostess and two of her brothers. It was a very fair sample

of a family amongst what may be called the middle class in

Nicaragua. The master of the house plays occasionally in a band at

dances and festas, and holds a respectable position at Juigalpa,

where the highest families keep stores and shops.

The only work is done by the females--the men keep up their dignity

by lounging about all day, or lolling in a hammock, all wearied

with their slothfulness, and looking discontented and unhappy. One

brother told me he was a carpenter, the other a shoemaker, but that

there was nothing to do in Juigalpa. I suggested that they should

go to Libertad, where there was plenty of work. They said there was

too much rain there. As long as their brother-in-law will allow

them, they will remain lounging about his house; and that will

probably be as long as he has one, for I noticed that the wealthier

Nicaraguans are rather proud of having a lot of relations hanging

about and dependent on them. Now and then they do little spells of

work--get in the cows or doctor one that is sick--but I doubt if

any of them average more than half an hour's work per day. Even

this may be an equivalent for their board, which does not cost

much, being only a few tortillas and beans.

To this have the descendants of the Spanish conquerors come

throughout the length and breadth of the land. With perennial

summer and a fertile soil they might drink the waters of abundance,

but the bands of indolence have wound round them generation after

generation, and now they are so bound up in the drowsy folds of

slothfulness that they cannot break their silken fetters. Not a

green vegetable, not a fruit, can you buy at Juigalpa. Beef, or a

fowl--brown beans, rice, and tortillas--form the only fare. When

Mexico becomes one of the United States, all Central America will

soon follow. Railways will be pushed from the north into the

tropics, and a constant stream of immigration will change the face

of the country, and fill it with farms and gardens, orange groves,

and coffee, sugar, cacao, and indigo plantations. No progress need

be expected from the present inhabitants.

Having finished our business in Juigalpa, we arranged to start on

our return early the next morning, Velasquez going round by Acoyapo

whilst Rito accompanied me to the mines. I had a fowl cooked

overnight to take with us, and set off at six o'clock. I shall make

some remarks on the road on points not touched on in my account of

the journey out. After leaving Juigalpa, we descended to the river

by a rocky and steep path, crossed it, and then passed over

alluvial-like plains intersected by a few nearly dry river beds, to

the foot of the south-western side of the Amerrique hills, then

gradually ascended the range that separates the Juigalpa district

from that of Libertad. The ground was gravelly and dry, with stony

hillocks covered with low trees and bushes. After ascending about a

thousand feet, the ground became much moister, and we reached an

Indian hut on the side of the range, where a few bananas and a

little maize was grown. Indian women, naked to the waist, were, as

usual, bruising maize, this being their employment from morning to

night, whilst the men were sitting about idle. Some mangy-looking

dogs set up a loud barking as we approached. To one of them clung a

young spider-monkey. A number of parrots also gave evidence of the

great fondness the Indians have for animal pets. There is scarcely

a house where some bird or beast is not kept; and the Indian women

are very clever in taming birds, probably by their constant

kindness and gentleness to them, and by feeding them out of their

mouths and fondling them. From near here we had a fine view, and

saw that we had come up the side of a wide valley, bounded on the

right by the Amerrique range, on the left by high rounded grassy

hills, on one of which we could make out the cattle hacienda of La

Puerta. Lines of trees and bamboo thickets marked the course of

numerous brooks that joined lower down and formed the small rivers

we had crossed. Looking down the valley it opened out into a wide

plain, with here and there sharp-topped conical hills, such as

abound in Central America, where they appear to have been taken as

landmarks by the Indians, as many of the old roads lead past them.

Beyond the plain in the grey distance were the waters of the lake

and the peaks of Ometepec and Madera.

We had now to ascend the side of a ravine, the road, or rather

path, being through a bamboo thicket for about a mile, the bamboos

touching our knees on either side and arching close overhead, so

that we had to lie on the mules' necks a great part of the way.

Some portions of the road were dangerously steep and rocky; but as

fully a league in distance is saved by taking this by-path, instead

of the main road by way of La Puerta, I generally preferred

travelling by it, especially as I often took rare and new beetles

on the bushes. I usually, when travelling, carried a net fixed to a

short stick, and caught the insects as I passed along, off the

leaves, without stopping; so abundant were they, that it was very

rare for me to take the shortest journey without finding some new

species to add to my collection. On this journey I did not,

however, take many insects, as the latter half of the year 1872,

for some reason or other, was a very unfavourable season for them.*

[* It is curious that Mr. W.H. Hudson should have selected this

same summer of 1872-73 as affording on the pampas of South America

an exceptionally good example of one of those "waves of life" in

which there is a sudden and inordinate increase in many forms of

animal life. See "The Naturalist in La Plata" chapter 3.] The

scarcity of beetles was very remarkable. The wet season set in a

little earlier than usual, but I do not think that this caused the

dearth of insects as at Juigalpa, where there had been scarcely any

rain, there were very few compared with the two former years. The

year before, when the season was nearly as wet, beetles, especially

longicorns, had been very abundant; and the first half of 1872 had

not been characterised by any scarcity of them. Some of the fine

longicorns that appear in April were numerous. No less than five

specimens of a large and beautiful one (Deliathis nivea, Bates),

white, with black spots, that we considered one of our greatest

rarities, were taken in that month. It was not until the end of May

that the great scarcity of beetles, compared with their abundance

in former years, became apparent. I think all classes of beetles

had suffered. Many fine lamellicorns, that were generally numerous,

were not seen at all; neither were many species of longicorns,

usually common. A fig-tree that I had growing in my garden had been

much injured by a longicorn (Taeniotes scalaris) in 1870 and 1871,

but was not touched in 1872.

Butterflies were also scarce, but it was the second season that

they had been so. Some ants were affected; in others, such as the

leaf-cutter, I noted no perceptible diminution in number. A little

ant (Pheidole sp.) that used to swarm on a passion flower which

grew over the house, attending on the honey glands, and scale

insects, disappeared altogether; and another species (Hypoclinea

sp.) that it used to drive away took its place. A small stinging

black ant (Solenopsis sp.), that was a great plague in the houses,

was also fortunately scarce. In the beginning of June nearly all

the white ants or termites ("Comiens" of the Nicaraguans) died. In

some parts of my house they lay in little heaps, just as they

dropped from the nests above in the roof, and most of the nests

were entirely depopulated. I examined some of the dead termites

with a magnifier, but could detect no difference in them, excepting

that they seemed a little swollen.

That some epidemic prevailed amongst the insects there can be no

doubt; and it is curious that it should have attacked so many

different species and classes. I am not sure that it was confined

to the insects, for there was also a great mortality amongst the

fowls, many dying from inflammation of the crop, and two large

parrots fell victims to the same disease. This disease amongst the

birds may not, however, have been connected in any way with that

amongst the insects. I recollect that in 1865 there was a somewhat

similar mortality amongst the wasps in North Wales. In the autumn

of the preceding year they had been exceedingly abundant, and very

destructive to the fruit. In the next spring, numerous females that

had hibernated commenced making their paper nests, and I

anticipated a still greater plague of wasps in the autumn than we

had had the year before; but some epidemic carried off nearly all

the females before they finished building their nests, and in the

autumn scarcely a wasp was to be seen. I saw also in the Natural

History magazines notices of their scarcity in all parts of

England.

The great mortality amongst the insects of Chontales in 1872 has

some bearing on the origin of species, for in times of such great

epidemics we may suspect that the gradations that connect extreme

forms of the same species may become extinct. Darwin has shown how

very slight differences in the colour of the skin and hair are

sometimes correlated with great immunity from certain diseases, and

from the action of some vegetable poisons, and the attacks of

certain parasites.* (* "Descent of Man" volume 1 page 242; and

"Animals and Plants under Domestication" volume 2 pages 227-230. I

have taken the examples given from the same author.) Any varieties

of species of insects that could withstand better than others these

great and probably periodical epidemics, would certainly obtain a

great advantage over those not so protected; and thus the survival

of one form, and the extinction of another, might be brought about.

We see two species of the same genus, as in many insects, differing

but little from each other, yet quite distinct, and we ask why, if

these have descended from one parent form, do not the innumerable

gradations that must have connected them exist also? There is but

one answer; we are ignorant what characters are of essential value

to each species; we do not know why white terriers are more subject

than darker-coloured ones to the attacks of the fatal distemper;

why yellow-fleshed peaches in America suffer more from diseases

than the white-fleshed varieties; why white chickens are most

liable to the gapes; or why the caterpillars of silkworms, which

produce white cocoons, are not attacked by fungus so much as those

that produce yellow cocoons? Yet in all these cases, and many

others, it has been shown that immunity from disease is correlated

with some slight difference in colour or structure, but as to the

cause of that immunity we are entirely ignorant.

At last we reached the summit of the range, which is probably not

less than three thousand feet above the sea, and entered on the

district of Libertad. Rounded boggy hills covered with grass, sedgy

plants, and stunted trees replaced the dry gravelly soil of the

Juigalpa district. The low trees bore innumerable epiphytal plants

on their trunks and boughs. Many of these are species of

Tillandsia, which sit perched up on the small branches like birds.

They have sheathing leaves that hold at their base a supply of

water that must be very useful to them in the dry season. Insects

get drowned in this water, and the plants may derive some

nourishment from their decomposing bodies, but I believe the

principal object is to obtain a supply of moisture, as the roots of

the plants do not hang down to the ground, like those of many other

epiphytes in the tropics, nor are they provided with bulbs like the

orchids. Some plants that hold liquids in cup-shaped leaves are

simply insect traps, many of them growing in bogs, where the supply

of moisture is perennial and constant. Such is the Indian-cup

(Sarracenia) that grows in the bogs of Canada, and the Californian

pitcher-plant (Darlingtonia californica), which also grows in bogs,

and is such an excellent fly-trap, that there is generally a layer

of from two to five inches of decomposing insects lying at the

bottom of the cup.* (* See "Nature" volume 3 pages 159 and 167.)

The different species of Drosera, or sun-dews, possess quite a

different apparatus for catching insects, and they also live in

bogs, which supports the inference that plants growing in such

situations have some especial need to obtain nutriment, which they

cannot draw from the decaying vegetation on which they live.

Possibly they obtain the salts of potash in this way. I did not

notice any provision in the leaves of the Bromeliaceous epiphytes

of Chontales to ensure the capture of insects, but often saw their

dead bodies in the water held at the base of the leaves, and any

that came to drink would be very liable to slip into the water from

off the nearly perpendicular side of the leaf and be drowned. It is

not impossible that the small supply of mineral salts required for

the organisation of these plants that do not draw any nutriment

from the earth may be obtained from dead insects, but, as I have

already stated, I believe that the principal object is to lay up a

store of water to carry them safely through the dry season.

Incidentally, the further advantage has been gained that insects

fall into the receptacles of water and are drowned, affording in

their decomposition nourishment to the plants.

Our road now lay over the damp grassy hills of the Libertad

district. It edged away from the Amerrique range on our right. To

our left, about three miles distant, rose the dark sinuous line of

the great forest of the Atlantic slope. Only a fringe of

dark-foliaged trees in the foreground was visible, the higher

ground behind was shrouded in a sombre pall of thick clouds that

never lifted, but seemed to cover a gloomy and mysterious country

beyond. Though I had dived into the recesses of these mountains

again and again, and knew that they were covered with beautiful

vegetation and full of animal life, yet the sight of that

leaden-coloured barrier of cloud resting on the forest tops, whilst

the savannahs were bathed in sunshine, ever raised in my mind vague

sensations of the unknown and the unfathomable. Our course was

nearly parallel to this gloomy forest, but we gradually approached

it. The line that separates it from the grassy savannahs is sinuous

and irregular. In some places a dark promontory of trees juts out

into the savannahs, in others a green grassy hill is seen almost

surrounded by forest. When I first came to the country, I was much

puzzled to understand why the forest should end just where it did.

It is not because of any change in the nature of the soil or

bedrock. It cannot be for lack of moisture, for around Libertad it

rains for at least six months out of the twelve. The surface of the

ground is not level on the savannahs, but consists of hill and

dale, just as in the forest. Altogether the conditions seemed to be

exactly the same, and it appeared a difficult matter to account for

the fact that the forest should end at an irregular but definite

line, and that at that boundary grassy savannahs should commence.

After seeing the changes that were wrought during the four and a

half years that I was in the country, I have been led to the

conclusion that the forest formerly extended much further towards

the Pacific, and has been beaten back principally by the agency of

man. The ancient Indians of Nicaragua were an agricultural race,

their principal food then, as now, being maize; and in all the

ancient graves, the stone for grinding corn is found placed there,

as the one thing that was considered indispensable. They cut down

patches of the forest and burnt it to plant their corn, as all

along the edge of it they do still. The first time the forest is

cut down, and the ground planted, the soil contains seeds of the

forest trees, which, after the corn is gathered, spring up and

regain possession of the ground, so that in twenty years, if such a

spot is left alone, it will scarcely differ from the surrounding

untouched forest. But it does not remain unmolested. After two or

three years it is cut down again and a great change takes place.

The soil does not now contain seeds of forest trees, and in their

stead a great variety of weedy-looking shrubs, only found where the

land has been cultivated, spring up. Grass, too, begins to get a

hold on the ground; if it prevails, the Indian, or Mestizo, does

not attempt to grow corn there again, as he knows the grass will

spoil it, and he is too indolent to weed it out. Often, however,

the brushwood has been cut down and burnt, and fresh crops of corn

grown several times before the grass has gained such an advantage

that the cultivator gives up the attempt to plant maize. There is

then a struggle between the weedy shrubs and the grass. The

leaf-cutting ants come to the aid of the latter. Grass they will

not touch, excepting to clear it away from their paths. The thick

forest they do not like, possibly because beneath its shade the

ground is kept too damp for their fungus beds. But along the edge

of the forest, by the sides of roads through it, that let in the

air and sunshine, and in clearings, they abound. They are

especially fond of the leaves of young trees, many of which are

destroyed by them. Should the brushwood ultimately prevail, and

cover the ground, the Indian or Mestizo comes again after a few

years, cuts it down, and replants it with maize. But as most of his

old clearings get covered with grass, he is continually encroaching

on the edge of the forest, beating it back gradually, but surely,

towards the north-east. As this process has probably been going on

for thousands of years, I believe that the edge of the forest is

several miles nearer the Atlantic than it was originally.

In this way many acres in the neighbourhood of Pital were taken

from the forest, and added to the grass-lands, whilst I was in the

country. The brushwood-land does not yield such good crops as the

virgin forest, but it is nearer to the huts of the cultivators, who

live out on the savannahs, so that whenever the weedy shrubs gain

possession of a spot sufficiently large for a clearing, and choke

off the grass, these places are again cut down and burnt, and thus

the forest is never allowed to establish outposts, or advanced

stations, in the disputed ground. What would be the result if man

were withdrawn from the scene, I do not know, but I believe that

the forest would slowly, but surely, regain the ground that it has

lost through long centuries. The thickets and dense brushwood that

always spring up along the edge of the forest, and consist of many

shrubs that the leaf-cutting ants do not touch, would gradually

spread, and beat back the grass. In their shade and shelter, seeds

from the forest would vegetate and grow, and thus, I think, very

slowly, inch by inch, the forest would regain its long-lost

territory, and gradually extend its limits towards the south-west,

until it reached its old boundaries, where a change in the physical

character of the land, or in the amount of moisture precipitated,

would stay its further progress. It is far more likely, however,

that man will drive back the forest to the very Atlantic than that

he will quit the scene.

After passing the Indian graves, about a league from Libertad, we

turned off to the right, by a path that led directly to the Mico,

without going through the town. After crossing several rounded

grassy hills, we reached the river, and found it swollen with

recent rains, but fordable. Sometimes travellers are detained

several days, unable to cross, and I was always glad when,

returning to the mines, I had put it behind me. Now and then a

traveller is drowned when attempting to cross the swollen river,

but these accidents are rare, as it is well known, by certain rocks

being covered, when it is unfordable. If carried away, a traveller

has little chance to save his life, as just below the crossing the

river is rapid and the banks precipitous. I heard of one man who

had had a very narrow escape. He was trying to cross on mule-back,

but his beast lost its footing, rolled over, and was rapidly washed

away. The poor man was carried into the roaring rapids, and would

soon have been drowned, but a herdsman on the bank, who was looking

for cattle, threw his lasso cleverly over the drowning traveller,

and dragged him on shore. Some of the "vacqueros," as the herdsmen

are called, are wonderfully adroit in throwing the lasso; when

riding at full speed, they throw it over the horns of the cattle,

or the heads of the horses, and can hold the strongest if sideways

on. But I have seen some old bulls that knew how to get loose; they

would run straight away from the vacquero in places where he could

not ride round them, and getting a straight pull on the lasso,

would break it, or draw it out of his hands. There are no horses or

mules, and very few cattle, however, that know how to do this, I

was told by the herdsmen.

After crossing the river, we soon reached Pital, where I had a cup

of tea and got a fresh mule. We now turned nearly at right angles

to our former course, and struck into the dark forest, the road

through which I have already described. It was very wet and muddy.

In some places, although it was only the commencement of the wet

season, the mules sank above their knees. On this occasion, as on

many others, I had often to notice how well the mule remembered

places where in some former year it had avoided a particularly bad

part by making a detour. I was riding a mule that had tender feet,

having just recovered from the bite of a spider, that had

occasioned the loss of one of its hoofs, and when it came near to a

place where it could escape the deep mud by going over a stony part

it would slacken its pace and look first at the mud, then at the

stones, evidently balancing in its mind which was the lesser evil.

Sometimes, too, when it came to a very bad place, which was better

at the sides, I left it to itself, and it would be so undecided

which side was the best, that making towards one it would look

towards the other, and end by getting into the worst of the mud. It

was just like many men who cannot decide which of two courses to

take, and end by a middle one, which is worse than either. And just

as in men, so in mules, there is every variety of disposition and

ability. Some are easily led, others most obstinate and headstrong;

some wise and prudent, others foolish and rash. The memory of

localities is much stronger in horses and mules than in man. When

travelling along a road that they have been over only once, and

that some years before, where there are numerous branch roads and

turnings, they will never make a mistake, even in the dark; and I

have often, at night, when I could not make out the road myself,

left them to their own guidance, and they have taken me safely to

my destination. Only once was I misled, and that through the too

good memory of my mule. Many years before it had been taken to a

pasture of good grass, and recollecting this, it took me several

miles out of my road towards its old feeding-ground, causing me to

be benighted in consequence.

I reached the mines at nine o'clock, and found that during my

absence it had been raining almost continuously, although at

Juigalpa there had been only a few slight showers.

The Naturalist in Nicaragua · 第 10 / 21 章