Notes of a naturalist in South America

THE BATHS OF CAUQUENES.

The autumn season being now far advanced, the guests at the establishment were few – about twenty in all. After supper they assembled in a drawing-room and adjoining music-room. I was struck not only by the general tone of courtesy and good-breeding of the party, but by the fact that several of them at least were well-informed men, taking an intelligent interest in physics and natural history. Two or three gentlemen spoke a little, but only a little, English, and, my command of Spanish being equally imperfect, conversation did not flow very freely, and I retired for the night with a feeling that at a more favourable season I should be very loth to quit such pleasant head-quarters.

After a rather cold night, I rose early on the 15th of May, with a sense of the impending necessity for an immediate decision as to my future plans. Scanning anxiously the portion of the great range seen towards the head of the valley, I saw that fresh snow extended much lower than I had observed it at Santiago, while heavy broken masses of dark clouds lay along the flanks of the higher mountains. I received no encouragement from Mr. Hess. The ordinary season for rain in the low country had arrived, and this would take the form of snow in the inner valleys of the Cordillera; all appearances boded a change of weather which is always anxiously desired by the native population. I reluctantly decided to despatch a messenger to Don Olegario Soto renouncing the projected excursion, contenting myself with the prospect of approaching as near to the great range as could be accomplished in a single day from the baths.

To the naturalist, however, a new country is never devoid of interest; and this was my first day on the outer slopes of the Chilian Andes. The season was, indeed, the most unfavourable to the botanist of the entire year. After six months’ drought, broken only by one or two slight showers, the ground was baked hard, nearly to the consistence of brick, and most of the herbaceous vegetation utterly dried up. A great part of the day was nevertheless very well spent in rambling over the hill above the baths, and making closer acquaintance with many vegetable forms altogether new, or hitherto seen only from a distance. The trees and shrubs of this region are with scarce an exception evergreen, and the most conspicuous, though differing much from each other in structure and affinities, bear a striking resemblance in the general form and character of their foliage, formed of thickset, broadly elliptical, leathery leaves, giving a dense shade impervious to the sun. The largest is the peumo25 tree, already referred to, which forms a thick trunk, but rarely exceeds thirty feet in height. Next to this in dimensions are two trees of the Rosaceous family, allied in essential characters (though very different in appearance) to the Spiræas, of which the common meadowsweet is the most familiar example. One of these, the Quillaja saponaria of botanists, is much prized for the remarkable properties of the bark, said to contain, along with carbonate of lime and other mineral constituents, much saponine, an organic compound having many of the properties of soap. It is commonly used for washing linen, and especially for cleansing woollen garments, to which it gives an agreeable lustre. Nearly allied to this is the Kageneckia oblonga, a small tree of no special use except to aid in clothing the parched hills of the lower region of Chili. It would seem that all these trees might be successfully introduced into the warmer parts of southern Europe, especially the south of Spain and Sicily, and the Quillaja would doubtless prove to be of some economic value.

CHILIAN TREES.

To the European traveller the most remarkable vegetable inhabitant of the dry hills of Central Chili is the tall cactus (Cereus quisco), which I had first seen on the way from Valparaiso to Santiago. They were abundant on the lower slopes about Cauquenes, the stiff columnar stems averaging about a foot in diameter. I was told that the plant was now to be found in flower, and was surprised to observe on the trunks, as I approached, clusters of small deep-red flowers that appeared very unlike anything belonging to this natural family. Nearer inspection showed that they had none but an accidental connection with the plant on which they grew. The genus Loranthus, allied to our common European parasite, the mistletoe, is widely spread throughout the world, chiefly in the tropics. From three to four hundred different species are known, nearly all parasites on other plants; as a rule, each species being confined to some special group, and many of them known to fix itself only upon a single species. Botanists in various regions have remarked that there is frequently a marked resemblance between the foliage of the parasitic Loranthus and that of the plants to which it is attached; but it is especially remarkable that the only species which is known to grow upon the leafless plants of the cactus family should itself be the only leafless species of Loranthus, consisting as it does only of a very short stem, from which the crowded flower-stalks form a dense cluster of bright-red, moderately large flowers. Although it is not easy to conjecture how it may act, it is conceivable that these conformities may be results of natural selection; but it is also possible that, like many curious instances of parallelism among the forms of plants belonging to widely different types, the facts may hereafter be seen to result from some yet undiscovered law regulating the direction of variation in the development of organic beings.

A CURIOUS PARASITE.

In some places dense masses of spiny shrubs were massed together, overgrown by climbing plants, amongst which the most strange and attractive were composites of the genus Mutisia. The Chilian species have all stiff, leathery, undivided leaves ending in a tendril, with large brownish-red or purple flowers, of which very few were to be found at this advanced season. Among the shrubs I was struck by a species of Colletia, a genus characteristic of temperate South America. They are nearly or quite leafless, and remind one slightly of our European furze, but are much more rigid, with fewer, but hard and penetrating spines, which, unlike those of the furze, are true branches, sharpened to a point and set on at right angles to the stem. The species common here (Colletia spinosa of Lamarck) grows to a height of four or five feet, and would probably be found very useful for hedges on dry stony ground in the south of Europe. I regret that the seeds which I sent to Italy have not germinated.

At the present season, corresponding to mid-November in Europe, I could not expect to see much of the native herbaceous vegetation, and the majority of the plants collected showed little more than the parched skeletons of their former selves. The recent slight showers, which alone had broken the long drought since the preceding spring, sufficed to awaken into life two species of Oxalis, whose flowers and early leaves just pierced through the hard surface of the soil; but, although some young leaves heralded the appearance of species of the lily tribe, no other new flowers had appeared. Ferns were scarce, but I was rather surprised to find a fine Adiantum in some abundance under the shade of the Quillaja and Kageneckia trees.

In the evening I arranged with Mr. Hess to start early on the following morning, with the object of approaching as nearly as possible to the higher zone of the Cordillera, of which, despite cloudy weather, I had tempting glimpses during the day.

I was on foot early on the 16th, but the prospect was not altogether cheering. The clouds which covered the sky were of leaden hue, and lay about mid-height on the range of the Cordillera. The horses were ready after the usual delay, and a taciturn young man, who probably thought the expedition a bore, was in readiness to act as guide. As I was about to mount, Mr. Hess lent me a poncho, which I at once drew over my head, and for which I afterwards had reason to be grateful. We rode on in silence for more than an hour, following a track that cuts across the great bend of the Cachapoal above the baths. The river is formed by the union of four or five torrents that issue from as many of the interior valleys of the Cordillera. It flows at first northward, nearly parallel to the main chain, until, a few miles above the baths, it bends westward and descends towards the open country. We had reached a point overlooking the upper valley, and, as far as one might judge from glimpses through breaks in the clouds, commanding a noble view of the great range of the Cordillera. Before us lay the slopes by which, at a distance of two or three miles, we might reach the only bridge which spans the upper course of the Cachapoal. Just at this interesting point the threatened rain began, at first gentle, but steadily increasing. I went on for some time on the chance of any token of improvement; but, as none appeared, I decided on sending back the horses and returning on foot to the baths.

USE OF THE PONCHO.

I had this day my first experience of the value of a genuine poncho woven by the Indian women from the wool of the guanaco. Throughout South America the cheap articles in common use, manufactured in England and Germany, have almost replaced the native garment. They are comparatively heavy and inconveniently warm, while not at all efficient in keeping out rain. After more than three hours’ exposure to heavy rain, the light covering lent to me by Mr. Hess had allowed none to pass. It is surprising that such a serviceable and convenient garment, which leaves the arms free, and is equally useful on foot or on horseback, is not more generally adopted in Europe, especially by sportsmen. A good poncho is not, however, to be had cheaply. I was asked sixty dollars for one at Buenos Ayres, and that, I believe, is about the ordinary price.

The change of weather which culminated in this wet day at Cauquenes seems to have extended along the range of the Cordillera; but, to illustrate the rapid change of climate which is found in advancing northward along the west side of the Andes, I may mention that, while the rain continued to fall steadily for ten and a half hours at Cauquenes, it lasted but five hours at Santiago, about fifty miles to the northward; and at Santa Rosa, forty miles farther in a direct line, only two hours’ rain was obtained by the thirsty farmers on the banks of the Aconcagua.

On the morning of the 17th the clouds had disappeared, and the valley was lit up with brilliant sunshine. Fresh snow lay thickly on the flanks of the higher mountains, and I had reason to congratulate myself that I had not undertaken an expedition which would have resulted in utter discomfort without any adequate compensation, as the Alpine vegetation must have been completely concealed by the fresh snow. The roads and paths were all deep in mud, and the slopes very slippery from the rain, so I decided on descending to the rocky banks of the river below the baths, and, following the stream as far as I conveniently could. I did not go far, but a good many hours were very well occupied in examining the vegetation of the left bank of the Cachapoal and of a little island of rock in the middle of the stream. In summer one of the ordinary suspension bridges of the country enables the visitors to cross to the right bank, but this is removed during winter, and the swollen waters of the river made all the usual fords impassable for the present.

GROUPS OF INCOMPLETE SPECIES.

Many forms of Escallonia were abundant along the stream. A few species only of this genus are cultivated in English gardens, but in their native home, the middle and lower slopes of the Andes, they exhibit a surprising variety of form while preserving a general similarity of aspect. They are all evergreen shrubs, some rising to the stature of small trees, with undivided, thick, usually glossy leaves, and white, red, or purplish flowers. Although forty-three different species have been described from Chili alone, it is easy to find specimens not exactly agreeing with any of them, and to light upon intermediate forms that seem to connect what appeared to be quite distinct species. They afford an example of a fact which I believe must be distinctly recognized by writers on systematic botany – that in the various regions of the earth there are some groups of vegetable forms in which the processes by what we call species are segregated are yet incomplete; and amid the throng of closely allied forms, the suppression of those least adapted to the conditions of life has not advanced far enough to differentiate those which can be defined and marked by a specific name.

To the believer in evolution, it must be evident that at some period in the history of each generic group there must have occurred an interval during which species, as we understand them, did not yet exist; and perhaps the real difficulty is to explain why such instances are not more frequent than they now appear to be. Familiar examples are the genera Hieracium and Rosa in Europe; Aster and Solidago in North America; while in South America, Escallonia, Malvastrum, and several groups of Myrtaceæ seem to exhibit the same phenomenon.

Another genus having numerous species in South America, but, so far as I know, not displaying the same close connection of forms linking the several species, is Adesmia, a leguminous genus allied to the common sainfoin. I found several species near the baths, the most attractive being a little spiny yellow-flowered bush, with much the habit of some Mediterranean Genistæ, but with pods formed of several joints, each covered with long, purple, glistening hairs.

A bright day was followed by a clear cold night, the thermometer falling to 40° Fahr. in the court, and slight hoar-frost was visible in the lower part of the valley near the baths. I started early for a ramble over the higher hills rising to the south and south-west of the establishment. After following a track some way, I struck up the steep stony slopes, meeting at every step the dried skeletons of many interesting plants characteristic of this region of America, but here and there rewarded by finding some species in fruit, or even with remains of flower. After gaining the ridge, I found that the true summit lay a considerable way back, quite out of sight of the baths. To this, which is called El Morro de Cauquenes,26 I directed my steps, wishing to enjoy a unique opportunity for a wide view of the Chilian Andes.

PANORAMIC VIEW OF THE ANDES.

The day was cloudless, and the position most favourable. In this part of the range the Cordillera bends in a curve convex to the east, so as to describe a nearly circular arc of about 60°, with Cauquenes as a centre. The summits of the main range, which apparently vary from about sixteen to nineteen thousand feet in height, and are nearly forty miles distant, send out huge buttresses dividing the narrow valleys whose waters unite to form the Cachapoal, and are in many places so high as to conceal the main range. The slopes are everywhere very steep, so that, in spite of the recent fall of snow, dark masses of volcanic rock stood out against the brilliant white that mantled the great chain. The tints in Petermann’s map would indicate that the highest peaks are those lying about due east, but it appeared to me that two or three of those which I descried to the south-east, though slightly more distant, were decidedly higher. It will probably be long before the Chilian Government can undertake a complete survey of the gigantic chain which walls in their country on the eastern side. No pass, as I was informed, is used to connect the upper valley of the Cachapoal with the Argentine territory.

From the summit I descended about due north into a little hollow, whence a trickling streamlet fell rather rapidly towards the main valley. As commonly happens in Chili, this has cut a deep trench, or quebrada; and when I had occasion to cross to the opposite bank, I had no slight difficulty in scrambling down the nearly vertical wall, though partly helped and partly impeded by the shrubs that always haunt these favourable stations. The Winter’s bark, not yet in flower, differed a good deal from the form which I had seen at Valparaiso, and the foliage was much the same that I afterwards found in the channels of Patagonia. Among the few plants yet flowering at this season was a large lobelia, of the group formerly classed as a distinct genus under the name Tupa,27 and which is peculiar to Chili and Peru.

CAPTIVE CONDORS.

On my return from a delightful walk, I found much-desired letters from home awaiting me, and along with them the less welcome information that the departure of the Triumph was delayed for several weeks. Renouncing with regret the agreeable prospect of a voyage in company with Captain Markham, I at once wrote to secure a passage in the German steamer Rhamses, announced to leave Valparaiso on May 28.

Among other objects of interest at this place, I was struck by the proceedings of two captive condors, who, with clipped wings, roamed about the establishment, and seemed to have no desire to recover the liberty which they had lost as young birds. One of them was especially pertinacious in keeping to the side of the court near to the dining-room and kitchen, always on the look-out for scraps of meat and refuse. Contrary to my expectation, the colour of both birds, which were females, was a nearly uniform brown, with only a few white feathers beneath. They were larger than any eagles, but scarcely exceeded one or two of the largest lämmergeier of the Alps that I have seen in confinement.

On the morning of May 19 I with much regret took my departure from the baths, and found myself in company with an elderly gentleman and his pretty and agreeable daughter, who also desired to return to Santiago. Starting some two hours earlier than was at all necessary, we had spare time, which I employed in looking for plants at Rio Claro and about the Gualtro station; but at this season very little remained to interest the botanist. We reached the capital about five p.m., and, as the days were now short, the sun was setting as I went in an open carriage along the broad Alameda, which runs nearly due east. The better to enjoy the finest sunset which I had yet seen in America, I was sitting facing westward, with my back to the horses, when an unusual glow of bright light on the adjoining houses caused me to turn my head. Never shall I forget the extraordinary spectacle that met my eyes. I am well used to brilliant sunsets, for, so far as I know, they are nowhere in the world so frequent as in the part of north-eastern Italy approaching the foot of the Alps, with which I am familiar. But the scene on this evening was beyond all previous experience or imagination. The great range of the Cordillera that rises above the town, mostly covered with fresh snow, seemed ablaze in a glory of red flame of indescribable intensity, and the whole city was for some minutes transfigured in the splendour of the illumination.

SUNSET ILLUMINATION.

The subject of sunset illumination has been much discussed of late in connection with the supposed effects of the great eruption of Krakatoa, and I confess to a suspicion that these have been considerably overrated. That the presence of finely comminuted particles in the higher region of the atmosphere is one of the chief causes that determine the colour of the sky, may be freely conceded by those who doubt whether a single volcanic eruption sufficed to alter the conditions over the larger part of the earth’s surface. It is certain that some of the districts ordinarily noted for sunsets of extraordinary brilliancy are remote from active volcanoes. So far as South America is concerned, it may, on the other hand, be remarked that if volcanic action be an efficient cause, it is present at many points of the continent as well as in Central America, while brilliant sunsets are, so far as I know, of rare occurrence except in Chili.

CHAPTER IV

Baths of Apoquinto – Slopes of the Cordillera – Excursion to Santa Rosa de los Andes and the valley of Aconcagua – Return to Valparaiso – Voyage in the German steamer Rhamses– Visit to Lota – Parque of Lota – Coast of Southern Chili – Gulf of Peñas – Hale Cove – Messier’s Channel – Beautiful scenery – The English narrows – Eden harbour – Winter vegetation – Eyre Sound – Floating ice – Sarmiento Channel – Puerto Bueno – Smyth’s Channel – Entrance to the Straits of Magellan – Glorious morning – Borya Bay – Mount Sarmiento – Arrival at Sandy Point.

Having devoted the day following my return to Santiago to botanical work, chiefly in the herbarium of Dr. Philippi, I started on the following morning in company with his son, Professor Friedrich Philippi, for an excursion up the slopes of the mountain range nearest the city. My companion had kindly sent forward in advance his servant with horses, and we engaged a hackney coach to convey us to the Baths of Apoquinto, where a warm mineral spring bursts out at the very base of the mountain. The common carriages throughout South America are heavy lumbering vehicles, and the road, though nearly level, was deep in volcanic sand; but the horses are excellent, and, in spite of several halts to collect a few plants yet in flower, we accomplished the distance of nine miles in little over an hour.

BATHS ON APOQUINTO.

The establishment at Apoquinto is on a small scale and somewhat rustic in character, but it had been recently taken by an Englishman, and now supplies fair accommodation, which would be prized by a naturalist who should be fortunate enough to visit Chili at a favourable season. We mounted our horses without delay, and at once commenced the ascent, gentle for a short way, but soon becoming so steep that it was more convenient to dismount at several places. Under the experienced guidance of my companion, I found more interesting plants still in flower or fruit than I had ventured to expect at this season. I here for the first time found a species of Mulinum, one of a large group of umbelliferous plants characteristic of the Chilian flora, and nearly all confined to South America. The leaves in the commonest species are divided into a few stiff pointed segments, reminding one somewhat of the Echinophora of the Mediterranean shores, once erroneously supposed to be a native of England.

I was especially struck on this day with the extraordinary variety of odours, pleasant or the reverse, that are exhaled by the native plants of Chili. As commonly happens in dry countries, a large proportion of the native plants contain resinous gums, each of which emits some peculiar and penetrating smell. I had already observed this elsewhere in the country, but, perhaps owing to the great variety of the vegetation on these slopes, the recollections of the day are indelibly associated with those of the impressions on the olfactory nerve. If there be persons in whom such impressions are sufficiently distinct to be accurately recalled by an effort of the memory, I can imagine that in some countries the nose might afford a valuable help to the botanical collector. To judge, however, from personal experience, I should say that of all the senses that of smell is the one which supplies the least accurate impressions, and those least capable of certain recognition.

We reached a place where a small stream from the upper part of the mountain springs in a little waterfall from a cleft in the rocks, and which is known as the Salto de San Ramon. This is probably about four thousand feet above the sea-level, and between us and the lower limit of the snow which covered the higher slopes there stretched a rather steep acclivity, covered, like the ground around us, with bushes and small shrubby plants. A few small trees (chiefly Kageneckia) grew near the Salto, but higher up scarce any were to be seen. Professor Philippi, who is well acquainted with the ground, thought that little, if anything, would be added to our collections by continuing the ascent, so we devoted the spare time to examining the ground in our immediate neighbourhood, thus adding a few species not before seen. In summer, however, an active botanist, starting early from Apoquinto, who did not object to an ascent of six or seven thousand feet, would reach the zone of Alpine vegetation, and be sure to collect many of the curious plants of this region of the Andes.