Great is the alarm of the natives on the near approach of these fires to their towns, the whole population turning out, and with branches of trees beating out the fire. It is seldom, however, that their huts are consumed, as the villages are generally situated in places where trees and shrubs abound, and the different huts are mostly separated by hedges of different species of Euphorbiaceæ. Many villages are entirely surrounded by a thick belt of these milky-juiced plants, effectually guarding them from any chance of fire from the grass outside. Where the huts are not thus protected, the danger, of course, is very great, but the natives sometimes take the precaution of setting fire to patches of the grass to clear a space around the huts or village. There is no danger in travelling from these grass fires, for, when they are seen approaching, their rate of progress being slow, it is sufficient to set fire to the dry grass to leeward to clear a space in which to encamp in safety.

The change in vegetation is also accompanied by difference of climate, but it is difficult to say whether they react on each other, and if so, in what proportion. The rains are very much more abundant and constant towards the interior of the country, where the vegetation is densest: on the coast the rains are generally very deficient, and some seasons entirely fail; this is more especially the case south of about 12° Lat., several successive rainy seasons passing without a single drop of rain falling. A three years’ drought in the interior of Loanda is still vividly remembered, the inhabitants, from their improvident habits, perishing miserably by thousands from starvation. In my mining explorations at Benguella, I was at Cuio under a cloudless sky for twenty-six months, in the years 1863 and 1864, with hardly a drop of water falling.

I had under my charge at that time twenty-four white men, and between 400 and 600 blacks at work on a copper deposit, mining and carrying ore to the coast, distant about four miles; and no one accustomed to a constant supply of water, can imagine the anxiety and work I had to go through to obtain the necessary amount for that large number of thirsty people, very often barely sufficient for drinking purposes; no water fit for drinking or cooking was to be had nearer than six miles, and as no bullock carts could be employed, it had all to be carried in kegs on men’s shoulders, and by a troop of the most miserable, small, idiotically stubborn donkeys that can be imagined from the Cape de Verde Islands. It was impossible always to be looking after the blacks told off daily on water duty, and words cannot express the annoyance and vexation that the rascals constantly caused us, by getting drunk on the road, wilfully damaging the kegs, selling the water to natives on their way back, bringing the filthiest water out of muddy pools instead of clear from the proper place, sleeping on the road, and keeping all waiting, sometimes without a drop of water, very often till far into the night. This was no joke when we were thirsty, hungry, dusty, and tired, after a hot day’s work blasting rock, breaking up copper ore in the sun at the mine in the bottom of a circular valley, where the little air above seldom reached, and where the dazzling white sand and gneiss rock, bare of nearly all vegetation, reflected and intensified the glare and heat almost unbearably in the hot season.

In going from north to south the character of the vegetation changes very insensibly from the River Congo to Mossamedes. As far as Ambrizzette the Mateba palm (Hyphæne Guineensis) is very abundant. This palm-tree, unlike the oil-palm, which is only found near water, or in rich soil, grows on the dry cliffs and country of the littoral region very abundantly as far as about Ambriz. The leaves of this palm-tree are employed to make small bags, in which most of the ground-nuts are exported from the coast. The Cashew-tree (Anacardium occidentale) grows on this part of the coast from Congo to Ambrizzette still more abundantly, in many places there being hardly any other tree or shrub; it is also very plentiful again around Loanda, but to the south it nearly disappears. A thin stemmy Euphorbia, nearly leafless, is a principal feature of the landscape about Loanda, and gives it a very dull and arid appearance. The cactus-like, upright Euphorbia is a notable characteristic of the whole coast of Angola.

South of Benguella the country is extremely arid, the gneiss, gypsum, and basalt, of which it is principally composed, appearing only to afford nourishment to a very limited vegetation, both in number or species, principally spiny trees and shrubs with numbers of dreadful recurved prickles, nearly bare of leaves a great part of the year,—and over immense tracts of very uneven ground even these are scarce: only the gigantic Euphorbias, and the stunted roots of grass sparingly distributed, break the monotony of a silent, dry, rocky desert.

A very curious creeper, a species of Cassytha, is extremely abundant in Benguella, covering the shrubs and small trees closely with its network of leafless string-like stems. The Sansevieria Angolensis is very plentiful all over the littoral region of Angola; the flat-leaved species (S. longiflora) is only noticed north from Ambriz to Congo, and only growing very near the sea: the S. Angolensis is but rarely seen with it, and it is very curious how distinctly these two species are separated. In the immediate vicinity of all the rivers and streams of Angola the vegetation is, as might be expected, generally very luxuriant, particularly north of Benguella.

The total absence of horned cattle among the natives on the coast, from the River Congo to south of the River Quanza, is very remarkable; due, I believe, as much to some influence of climate, or poisonous or irritant nature of the vegetation, as to the neglect of the natives to breed them, though a few small herds of cattle to be seen at Ambrizzette and Quissembo belonging to the white traders, and brought by the natives far from the interior, appear to thrive very well, and several Portuguese have bred fine herds at the River Loge, about three miles from Ambriz; they would not thrive, however, at Bembe, where those that were purchased from the ivory caravans from the interior gradually became thin and died. The natives south of the Quanza beyond the Quissama country, as far as Mossamedes, breed large numbers of cattle—their principal wealth, in fact, consisting of their herds. The district of Loanda cannot supply itself with cattle sufficient for its moderate consumption, a large proportion having to be brought from Cambambe and Pungo Andongo and even much farther from the interior.

South of the Congo there is only one navigable river, the Quanza, in 9° 20´ S., and even the bar and mouth of this are shifty, and so shallow as only to admit vessels drawing not more than five or six feet of water, and this only at high tides. The Rivers Dande and Bengo are only navigable by barges for a few miles; others, such as the Ambrizzette, Loge, Novo Redondo, Quicombo, Egito, Anha, Catumbella, and Luache, barely admit the entrance of a canoe, and their bars are often closed for a considerable time in the dry season; the beds of others are completely dried up for miles inland at that time of the year, and it is very curious to see the level sandy bed without water between the luxuriant and creeper-covered banks, and the borders of sedge and grass.

Although dry on the surface, cool delicious water is met with at a few inches below. I shall never forget, on my first journey into Cambambe, the haste with which we pushed forward, on an intensely hot morning, in order to arrive at the River Mucozo, a small stream running into the Quanza. We had encamped the night before at a place where only a small supply of water was to be had from a filthy and muddy hole, and so thick and ochrey was it that, even after boiling and straining, it was nearly undrinkable; on reaching the high banks of the Mucozo, great was my disappointment to see the bed of the river one long expanse of dry sand shining in the hot sun, and my hope of water, as I thought, gone! Not so the blacks, who raised a loud shout as they caught sight of it, dashed in a race down the banks, and throwing themselves on the sand quickly scooped out a hole about six inches deep with their hands, and lying flat on their bellies stuck their faces in it, and seemed never to finish drinking to their hearts’ content the inexpressibly refreshing, cool, filtered water. After having only dirty and thick water to drink, not improved by coffee or bad rum, after a long, hot day’s journey, tired and exhausted, the ground for a bed, mosquitoes, and a smoky fire on each side to keep them off, fleas and other biting things from the sand, that nip and sting but are not seen or caught, snatches of sleep, feverish awakening in the morning, with parched mouth, the perspiration dried on the face and skin, gritty and crystallized and salt to the feel and taste, no water to drink or wash with, the sun out and shining strong again almost as soon as it is daylight, and hurry, hurry, through dry grass and sand without a breath of air, and with the thermometer at 90° in the shade, for four or five hours before we reached the Mucozo—it was no wonder I was disinclined to move from the place till the afternoon came, and the great heat of the day was passed; or that I thought the water, fresh and cold from its clean sandy bed, the most delicious drink that could be imagined!

The delight of a drink of pure cold water in hot climates has over and over again been described by all travellers, but it is impossible to realize it fully without experiencing the sensations that precede and cause the thirst that only cold water seems to satisfy.