VEGETATION.
May, 1847.
The plainward face of this range, along which the road from Kalka ascends, is quite devoid of forest. The lower part is covered with scattered jungle, to use a most expressive Indian word, of small shrubs, almost all of forms common in the plains. Carissa and Adhatoda are the most common, with Rottlera tinctoria, a plant which does not extend far into the plains, and a scandent leguminous shrub, apparently a species of Mucuna. Around the few houses which occur on the ascent, the bamboo occurs planted, as well as the mango, and other common cultivated trees of the Indian plains. At an elevation of about 4000 feet, an alteration in the vegetation begins to be perceptible. The thin jungle of plain shrubs disappears, the few shrubs which still occur, are generally scattered bushes of Hamiltonia, Nyctanthes, Prinsepia, Scutellaria, and Rubus, but the slopes are usually bare and grassy. Ferns and mosses appear in the crevices of the rocks, and the first individuals of those species which predominate in the temperate zone, are found in shady spots where they are sheltered from the sun. At the same elevation Euphorbia pentagona makes its appearance. This tree, which is confined to the hottest and driest slopes of the Himalaya, is remarkable for its peculiar shape, its thick fleshy five-angled branches, and its milky juice. It is nowhere to be met with in the plains of Upper India, but is common throughout the subtropical belt of the Himalaya from Kamaon westward.
ORIGIN OF KUSSOWLEE RIDGE.
May, 1847.
A glance at the map will serve to show that the great Himalayan mountain range, dividing the waters of the Sutlej from those of the Jumna, holds a nearly due east and west course in its middle part, but that at its western extremity it bends round to the south, and terminates in the Indian plain, not far from the town of Nahan, and that (among many others) the Kussowlee ridge is a branch from it, running in a north-westerly direction, and separating the waters of the more western branch of the Gambar, from the small tributaries of the Gagar, which find their way to the plains on the left hand.
The ridge upon which the station of Kussowlee is built, nowhere attains an elevation exceeding 7000 feet. It is very narrow, and often rocky and precipitous immediately below the crest on the plainward face, which dips very suddenly. The inner slope is somewhat less abrupt, and is covered from the summit to perhaps 1000 feet below it, with an open forest of a species of fir (Pinus longifolia), which, in general appearance and mode of growth, much resembles the Scotch fir, but is distinguished by the very great length of its leaves. The barracks for the troops and the houses of the residents are scattered over the northern slope, or perched on the narrow summit of the ridge.
The shrubby and herbaceous vegetation which occurs scattered among the fir-wood, is so markedly different from that which prevails at the base of the mountains, and during the greater part of the ascent, that the traveller appears suddenly transported into a new world. Instead of those tribes of the vegetable kingdom which abound in the torrid zone, all the forms which now meet the eye are characteristic of a temperate climate. The moderate elevation of the range, and its proximity to the plains, tend to lessen the rapidity of the diminution of temperature; and as the greater part of the ascent lies on a bare sunny slope, the tropical flora extends towards the summit, much farther than it does on ranges which rise higher, and are clothed with shady forest. During the ascent, therefore, the traveller, though often struck with the appearance of new forms, is still accompanied by many species familiar to him as natives of tropical jungles, but on passing to the northern face of the spur, the temperate region is at once entered, and most of the tropical forms disappear.
VIEW FROM KUSSOWLEE.
May, 1847.
As soon as the crest of the first slope of the Himalaya has been gained, the eye is naturally directed towards the mountains beyond, in order to ascertain their appearance and position, when viewed at a diminished distance and from so much more considerable an elevation than had previously been the case. Nor will the view from Kussowlee in favourable weather disappoint the traveller who is desirous of meeting with beautiful scenery. Immediately to the north lies a deep ravine, and beyond a single ridge is the wide valley of the Gambar, with numerous mountain spurs, which, from their comparatively lower level, are not prominently brought into view. To the south-east the main range dips abruptly to a level, nearly 1000 feet below what it attains in the station of Kussowlee itself, but again rises into the finely wooded hill on which has recently been built the Lawrence Asylum. Still further to the south are deep dells, with bare and rugged slaty mountains, scarcely at all wooded. In the months of May and June, when the atmosphere is generally extremely hazy, the prospect is limited to the ranges more immediately in the vicinity; but occasionally even in these months, as well as in the dry intervals of the rainy season, and during the delightful autumn weather which follows the termination of the rains, a much more distant prospect is opened, stretching far up the valley of the Sutlej, to the snow-clad peaks which, on either hand, hem in that river.
In the direction of the plains of India, the view is also very remarkable. The Kussowlee ridge so completely overtops the hills which intervene between it and the level country, that from its summit they interfere very little with the commanding view of the interminable flat which, like the ocean, stretches as far as vision extends. In the usual state of the atmosphere, especially in the hot season, a dense haze overhangs the plains, and entirely obscures their more distant parts; but in the cold season, as well as at day-break in summer, and especially after heavy rains, the misty vapours are entirely dissipated, and distant objects are defined with extreme precision.
Perhaps the most striking, because the most unexpected part of the view of the inner Himalaya, from Kussowlee, lies in the great depth of the valleys in the interior, and the distance of the next elevated range, of which the appearance of the mountains from the plains of India affords no indication. The extreme narrowness of the ridge, and the suddenness of the descent on both sides, is also very remarkable, and has, as already remarked, a very sensible effect on the climate, the heat of the lower mass being conveyed upwards, while the small extent of the knife-edge-like ridge, which rises above 6000 feet, exposes a minimum surface to the refrigerating influences of a rarefied atmosphere.