Having caught a specimen of this fly, I next proceeded to institute a comparison between it and the tsetse, as described by Dr. Livingstone on pp. 56-57, 'Missionary Travels and Researches in South Africa' (Murray's edition of 1868). The points of disagreement are many, and such as to make it entirely improbable that this fly is the true tsetse, though my men unanimously stated that its bite was fatal to horses as well as to donkeys. A descriptive abstract of the tsetse would read thus: "Not much larger than a common house-fly, nearly of the same brown colour as the honey-bee. After-part of the body has yellow bars across it. It has a peculiar buzz, and its bite is death to the horse, ox, and dog. On man the bite has no effect, neither has it on wild animals. When allowed to feed on the hand, it inserts the middle prong of three portions into which the proboscis divides, it then draws the prong out a little way, and it assumes a crimson colour as the mandibles come into brisk operation; a slight itching irritation follows the bite."
The fly which I had under inspection is called mabunga by the natives. It is much larger than the common housefly, fully a third larger than the common honey-bee, and its colour more distinctly marked; its head is black, with a greenish gloss to it; the after-part of the body is marked by a white line running lengthwise from its junction with the trunk, and on each side of this white line are two other lines, one of a crimson colour, the other of a light brown. As for its buzz, there is no peculiarity in it, it might be mistaken for that of a honey-bee. When caught it made desperate efforts to get away, but never attempted to bite. This fly, along with a score of others, attacked my grey horse, and bit it so sorely in the legs that they appeared as if bathed in blood. Hence, I might have been a little vengeful if, with more than the zeal of an entomologist, I caused it to disclose whatever peculiarities its biting parts possessed.
In order to bring this fly as life-like as possible before my readers, I may compare its head to most tiny miniature of an elephant's, because it has a black proboscis and a pair of horny antennae, which in colour and curve resemble tusks. The black proboscis, however, the simply a hollow sheath, which encloses, when not in the act of biting, four reddish and sharp lancets. Under the microscope these four lancets differ in thickness, two are very thick, the third is slender, but the fourth, of an opal colour and almost transparent, is exceedingly fine. This last must be the sucker. When the fly is about to wound, the two horny antennae are made to embrace the part, the lancets are unsheathed, and on the instant the incision is performed. This I consider to be the African "horse-fly."
The second fly, which sang the tenor notes more nearly resembled in size and description the tsetse. It was exceedingly nimble, and it occupied three soldiers nearly an hour to capture a specimen; and, when it was finally caught, it stung most ravenously the hand, and never ceased its efforts to attack until it was pinned through. It had three or four white marks across the after-part of its body; but the biting parts of this fly consisted of two black antennae and an opal coloured style, which folded away under the neck. When about to bite, this style was shot out straight, and the antennae embraced it closely. After death the fly lost its distinctive white marks. Only one of this species did we see at this camp. The third fly, called "chufwa," pitched a weak alto-crescendo note, was a third larger than the house fly, and had long wings. If this insect sang the feeblest note, it certainly did the most work, and inflicted the most injury. Horses and donkeys streamed with blood, and reared and kicked through the pain. So determined was it not to be driven before it obtained its fill, that it was easily despatched; but this dreadful enemy to cattle constantly increased in numbers. The three species above named are, according to natives, fatal to cattle; and this may perhaps be the reason why such a vast expanse of first-class pasture is without domestic cattle of any kind, a few goats only being kept by the villagers. This fly I subsequently found to be the "tsetse."
On the second morning, instead of proceeding, I deemed it more prudent to await the fourth caravan. Burton experimented sufficiently for me on the promised word of the Banyans of Kaole and Zanzibar, and waited eleven months before he received the promised articles. As I did not expect to be much over that time on my errand altogether, it would be ruin, absolute and irremediable, should I be detained at Unyanyembe so long a time by my caravan. Pending its arrival, I sought the pleasures of the chase. I was but a tyro in hunting, I confess, though I had shot a little on the plains of America and Persia; yet I considered myself a fair shot, and on game ground, and within a reasonable proximity to game, I doubted not but I could bring some to camp.
After a march of a mile through the tall grass of the open, we gained the glades between the jungles. Unsuccessful here, after ever so much prying into fine hiding-places and lurking corners, I struck a trail well traversed by small antelope and hartebeest, which we followed. It led me into a jungle, and down a watercourse bisecting it; but, after following it for an hour, I lost it, and, in endeavouring to retrace it, lost my way. However, my pocket-compass stood me in good stead; and by it I steered for the open plain, in the centre of which stood the camp. But it was terribly hard work—this of plunging through an African jungle, ruinous to clothes, and trying to the cuticle. In order to travel quickly, I had donned a pair of flannel pyjamas, and my feet were encased in canvas shoes. As might be expected, before I had gone a few paces a branch of the acacia horrida—only one of a hundred such annoyances—caught the right leg of my pyjamas at the knee, and ripped it almost clean off; succeeding which a stumpy kolquall caught me by the shoulder, and another rip was the inevitable consequence. A few yards farther on, a prickly aloetic plant disfigured by a wide tear the other leg of my pyjamas, and almost immediately I tripped against a convolvulus strong as ratline, and was made to measure my length on a bed of thorns. It was on all fours, like a hound on a scent, that I was compelled to travel; my solar topee getting the worse for wear every minute; my skin getting more and more wounded; my clothes at each step becoming more and more tattered. Besides these discomforts, there was a pungent, acrid plant which, apart from its strong odorous emissions, struck me smartly on the face, leaving a burning effect similar to cayenne; and the atmosphere, pent in by the density of the jungle, was hot and stifling, and the perspiration transuded through every pore, making my flannel tatters feel as if I had been through a shower. When I had finally regained the plain, and could breathe free, I mentally vowed that the penetralia of an African jungle should not be visited by me again, save under most urgent necessity.
The second and third day passed without any news of Maganga. Accordingly, Shaw and Bombay were sent to hurry him up by all means. On the fourth morning Shaw and Bombay returned, followed by the procrastinating Maganga and his laggard people. Questions only elicited an excuse that his men had been too sick, and he had feared to tax their strength before they were quite equal to stand the fatigue. Moreover he suggested that as they would be compelled to stay one day more at the camp, I might push on to Kingaru and camp there, until his arrival. Acting upon which suggestion I broke camp and started for Kingaru, distant five miles.
On this march the land was more broken, and the caravan first encountered jungle, which gave considerable trouble to our cart. Pisolitic limestone cropped out in boulders and sheets, and we began to imagine ourselves approaching healthy highlands, and as if to give confirmation to the thought, to the north and north-west loomed the purple cones of Udoe, and topmost of all Dilima Peak, about 1,500 feet in height above the sea level. But soon after sinking into a bowl-like valley, green with tall corn, the road slightly deviated from north-west to west, the country still rolling before us in wavy undulations.
In one of the depressions between these lengthy land-swells stood the village of Kingaru, with surroundings significant in their aspect of ague and fever. Perhaps the clouds surcharged with rain, and the overhanging ridges and their dense forests dulled by the gloom, made the place more than usually disagreeable, but my first impressions of the sodden hollow, pent in by those dull woods, with the deep gully close by containing pools of stagnant water, were by no means agreeable.
Before we could arrange our camp and set the tents up, down poured the furious harbinger of the Masika season in torrents sufficient to damp the ardor and newborn love for East Africa I had lately manifested. However, despite rain, we worked on until our camp was finished and the property was safely stored from weather and thieves, and we could regard with resignation the raindrops beating the soil into mud of a very tenacious kind, and forming lakelets and rivers of our camp-ground.