[Gutenberg 49270] • African Nature Notes and Reminiscences

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1908 Excerpt: ... substitute. The very important researches, however, of Lieutenant-Colonel Bruce in Zululand have shown that "the 'tse-tse' fly does not lay eggs as do the majority of the Diptera, but extrudes a yellow coloured larva, nearly as large as the abdomen of the mother." The perfect insect does not hatch out for six weeks, so that the increase by generation from a small number of individuals in the course of a few months would not be very great. I can only think, therefore, that all the tse-tse flies throughout the bush through which the ten miles of road led from Leshuma to the Chobi must have been attracted to its neighbourhood by the smell of the cattle dung, which no doubt they mistook for that of buffaloes, the animals with which they have always been so closely associated in the countries to the south of the Zambesi. I am, however, not at all satisfied with this explanation. I was obliged to keep my waggon standing on the bank of the Zambesi (waiting for ivory to be brought down from the Barotse valley) until late in November 1888, so that when I was at last able to send my oxen down to the river to bring it through ix THE BATAUWANA 161 the "fly," which now infested the waggon track leading from Leshuma to Kazungula in considerable numbers, the nights had become very warm, and although we did not start till after eleven o'clock, and ran the oxen to the river and brought the waggon back as quickly as possible, every one of them, twenty-one in all, got "fly-stuck" and died within six months. After 1888 the tse-tse flies again rapidly diminished in numbers between Leshuma and Kazungula, and have long since absolutely ceased to exist there; so that here again we have another instance of a country in which, at no very distant time, ...