Fig. 186.—Angora goat six days before death from takosis.
(Ann. Rep. U.S.A. Bur. An. Ind. 1902.)
Fig. 187.—Angora goat (photographed three days before death).
(Ann. Rep. U.S.A. Bur. An. Ind. 1902.)
Fig. 188.—The same goat as shown in Fig. 187. Position assumed after exhaustive efforts to regain its feet. (Ann. Rep. U.S.A. Bur. An. Ind. 1902).
Fig. 189.—Portion of a steer’s hide, showing the Texas fever tick (Boophilus annulatus) of the United States. Natural size. (Styles. Ann. Rep. Bur. An. Ind. 1900.)
Fig. 190.—Two female ticks (Hyalomma ægyptium) ovipositing. Natural size. (Photograph by J. E. Emery. Annual Report, U.S.A. Bureau of Animal Industry, 1900.)
It was first described by Babès in 1888, in animals inhabiting the Danube Valley, and was termed by him bacterial hæmoglobinuria of the ox. Afterwards it was well described by Smith and Kilborne (in 1889) under the title of Texas fever. It was rediscovered in Finland by Krogius and Van Hellens in 1894; in Sardinia by San Felice and Loi; in Australia in 1895 by Pound; and it has been the object of remarkable investigations by Koch in South Africa (1898–1904).