When opened, the cellular tissue on the surface of the body beneath the skin is seen to be injected with air, as if a quantity of soap-bubbles were scattered over it, or a dishonest, awkward butcher had been trying to make it look fat. The fat is of a greenish-yellow color and of an oily consistence. All the muscles are flabby, and the heart often so soft that the fingers may be made to meet through it. The lungs and liver partake of the disease. The stomach and bowels are pale and empty, and the gall-bladder is distended with bile.
These symptoms seem to indicate what is probably the case, a poison in the blood, the germ of which enters when the proboscis is inserted to draw blood. The poison-germ, contained in a bulb at the root of the proboscis, seems capable, although very minute in quantity, of reproducing itself, for the blood after death by tsetse is very small in quantity, and scarcely stains the hands in dissection. I shall have by-and-by to mention another insect, which by the same operation produces in the human subject both vomiting and purging.
The mule, ass, and goat enjoy the same immunity from the tsetse as man and the game. Many large tribes on the Zambesi can keep no domestic animals except the goat, in consequence of the scourge existing in their country. Our children were frequently bitten, yet suffered no harm; and we saw around us numbers of zebras, buffaloes, pigs, pallahs and other antelopes, feeding quietly in the very habitat of the tsetse, yet as undisturbed by its bite as oxen are when they first receive the fatal poison. There is not so much difference in the natures of the horse and zebra, the buffalo and ox, the sheep and antelope, as to afford any satisfactory explanation of the phenomenon. Is a man not as much a domestic animal as a dog? The curious feature in the case, that dogs perish though fed on milk, whereas the calves escape so long as they continue sucking, made us imagine that the mischief might be produced by some plant in the locality, and not by tsetse; but Major Vardon, of the Madras Army, settled that point by riding a horse up to a small hill infested by the insect without allowing him time to graze, and, though he only remained long enough to take a view of the country and catch some specimens of tsetse on the animal, in ten days afterward the horse was dead.
The well-known disgust which the tsetse shows to animal excreta, as exhibited when a village is placed in its habitat, has been observed and turned to account by some of the doctors. They mix droppings of animals, human milk, and some medicines together, and smear the animals that are about to pass through a tsetse district; but this, though it proves a preventive at the time, is not permanent. There is no cure yet known for the disease. A careless herdsman allowing a large number of cattle to wander into a tsetse district loses all except the calves; and Sebituane once lost nearly the entire cattle of his tribe, very many thousands, by unwittingly coming under its influence. Inoculation does not insure immunity, as animals which have been slightly bitten in one year may perish by a greater number of bites in the next; but it is probable that with the increase of guns the game will perish, as has happened in the south, and the tsetse, deprived of food, may become extinct simultaneously with the larger animals.
The Makololo whom we met on the Chobe were delighted to see us; and as their chief Sebituane was about twenty miles down the river, Mr. Oswell and I proceeded in canoes to his temporary residence. He had come from the Barotse town of Naliele down to Sesheke as soon as he heard of white men being in search of him, and now came one hundred miles more to bid us welcome into his country. He was upon an island, with all his principal men around him, and engaged in singing when we arrived. It was more like church music than the sing-song ee ee ee, ae ae ae, of the Bechuanas of the south, and they continued the tune for some seconds after we approached. We informed him of the difficulties we had encountered, and how glad we were that they were all at an end by at last reaching his presence. He signified his own joy, and added, "Your cattle are all bitten by the tsetse, and will certainly die; but never mind, I have oxen, and will give you as many as you need." We, in our ignorance, then thought that as so few tsetse had bitten them no great mischief would follow. He then presented us with an ox and a jar of honey as food, and handed us over to the care of Mahale, who had headed the party to Kolobeng, and would now fain appropriate to himself the whole credit of our coming. Prepared skins of oxen, as soft as cloth, were given to cover us through the night; and, as nothing could be returned to this chief, Mahale became the owner of them. Long before it was day Sebituane came, and sitting down by the fire, which was lighted for our benefit behind the hedge where we lay, he narrated the difficulties he had himself experienced, when a young man, in crossing that same desert which we had mastered long afterward. As he has been most remarkable in his career, and was unquestionably the greatest man in all that country, a short sketch of his life may prove interesting to the reader.
Sebituane was about forty-five years of age; of a tall and wiry form, an olive or coffee-and-milk color, and slightly bald; in manner cool and collected, and more frank in his answers than any other chief I ever met. He was the greatest warrior ever heard of beyond the colony; for, unlike Mosilikatse, Dingaan, and others, he always led his men into battle himself. When he saw the enemy, he felt the edge of his battle-axe, and said, "Aha! it is sharp, and whoever turns his back on the enemy will feel its edge." So fleet of foot was he, that all his people knew there was no escape for the coward, as any such would be cut down without mercy. In some instances of skulking he allowed the individual to return home; then calling him, he would say, "Ah! you prefer dying at home to dying in the field, do you? You shall have your desire." This was the signal for his immediate execution.
He came from the country near the sources of the Likwa and Namagari rivers in the south, so we met him eight hundred or nine hundred miles from his birth-place. He was not the son of a chief, though related closely to the reigning family of the Basutu; and when, in an attack by Sikonyele, the tribe was driven out of one part, Sebituane was one in that immense horde of savages driven back by the Griquas from Kuruman in 1824.* He then fled to the north with an insignificant party of men and cattle. At Melita the Bangwaketse collected the Bakwains, Bakatla, and Bahurutse, to "eat them up". Placing his men in front, and the women behind the cattle, he routed the whole of his enemies at one blow. Having thus conquered Makabe, the chief of the Bangwaketse, he took immediate possession of his town and all his goods.
* See an account of this affair in Moffat's "Missionary
Enterprise in Africa".
Sebituane subsequently settled at the place called Litubaruba, where Sechele now dwells, and his people suffered severely in one of those unrecorded attacks by white men, in which murder is committed and materials laid up in the conscience for a future judgment.
A great variety of fortune followed him in the northern part of the Bechuana country; twice he lost all his cattle by the attacks of the Matabele, but always kept his people together, and retook more than he lost. He then crossed the Desert by nearly the same path that we did. He had captured a guide, and, as it was necessary to travel by night in order to reach water, the guide took advantage of this and gave him the slip. After marching till morning, and going as they thought right, they found themselves on the trail of the day before. Many of his cattle burst away from him in the phrensy of thirst, and rushed back to Serotli, then a large piece of water, and to Mashue and Lopepe, the habitations of their original owners. He stocked himself again among the Batletli, on Lake Kumadau, whose herds were of the large-horned species of cattle.* Conquering all around the lake, he heard of white men living at the west coast; and, haunted by what seems to have been the dream of his whole life, a desire to have intercourse with the white man, he passed away to the southwest, into the parts opened up lately by Messrs. Galton and Andersson. There, suffering intensely from thirst, he and his party came to a small well. He decided that the men, not the cattle, should drink it, the former being of most value, as they could fight for more should these be lost. In the morning they found the cattle had escaped to the Damaras.