VETERINARY SCIENCE AND PRACTICE. 295 



liuman serum was injected into diseased animals, with the result that the blood para- 

 site always disappeared. This result was considered somewhat surprising from the 

 fact that the serum of animals which enjoy a natural immunity against a given dis- 

 ease is not ordinarily effective in the treatment of this disease. The experiments 

 were repeated many times on rats and mice, and the results were always the same. 

 The trypanosoma of tsetse-fly disease when injected into these animals increases 

 lajtidly in numbers until the death of the animals takes place. A dose of 0.5 cc, 

 however, of human blood was suthcient to cause the parasites to disappear and the 

 disappearance was more rapid and certain if the dose was increased to 1 or 2 cc. 

 While injections of human serum thus appeared to have a remarkable curative effect, 

 its preventive action was not very striking. 



Report on the surra disease of cattle and horses in the Protectorate of 

 Togo, Schilling ( Centbl Bakt. v. Par., 1. Abi., 31 {1902), No. 10, Orig., pp. 452-459).— 

 The author presents the results of his investigations on surra among horses and cattle. 

 A considerable number of cases were observed and notes were made on the symptoms 

 of the disease and on the pathological lesions. It was found that while the trypano- 

 soma might be absent in many instances from the blood of the general circulation 

 after death, the parasites were always present in large numbers in the red bone mar- 

 row. The author believes, therefore, that the anaemic condition which is a prominent 

 symptom of this disease is not due so much to an attack of the parasite upon the 

 fully developed red blood corpuscles, but to the destruction of the tissue in which 

 the supply of red blood corpuscles is renewed. 



Texas fever, Claude and Soulie {Bui. Agr. Algerie et Tunisie, 8 {1002), No. 3, 

 pp. 65-73). — An outbreak of this disease was reported as occurring in a dairy herd in 

 Algeria, during which 10 out of the 35 cows died. The symptoms are described and 

 an account is given of a number of post-mortem examinations which were conducted 

 on the dead animals. A microscopic examination of the blood showed conclusively 

 that the disease was Texas fever, and attention is called to the interesting fact of the 

 coinparatively large mortality during a cool season. 



A second note on Texas fever, M. Nicolle and Adil-Bey {Ann. Inst. PuRteur, 

 16 {1902), No. 4, pp. 291-293). — The authors continued their observations on the 

 pathogenic effects of the organism of Texas fever, giving special attention to the con- 

 ditions found in the liver, kidneys, and spleen. Sections of these organs were studied 

 under a microscope. The fixing and staining methods used during these studies are 

 descTil)ed in detail. 



The Queensland redwater immune cattle for South Africa {Agr. Jour. Cape 

 Good Ilopje, 20 {1902) , No. 3, pp. 184, 185) . — An experiment is being tried in Natal in 

 the introduction from Australia of cattle immune to Texas fever. If the animals 

 prove to be strictly immune to the disease, it is suggested that further extensive 

 importations will proljably be made from Australia and from North and South 

 America. 



The etiology of rinderpest, Nicolle and Adil-Bey {Compt. Rend. Acad. fid. 

 Paris, 134 {1902), No. 5, jyp. 321-324). — The authors made numerous experiments for 

 the purpose of determining the relative size of the micro-organisms of rinderpest. 

 It was found possible to select a Berkefeld filter of a thickness which would allow 

 the organisms of rinderpest to pass through and would not permit the passage of 

 other micro-organisms. The organisms of rinderpest, as well as of other diseases, 

 may frequently be contained in white blood corpuscles, and it is therefore suggested 

 that in order to make the microscojjic examination more accurate the material should 

 be first triturated, so as to set free micro-organisms which may have been contained 

 in the leucocytes, and thus make possible their identification. 



Studies on rinderpest, M. Nicolle and Adil-Bey {Ann. Inst. Pasteur, 16 {1902), 

 No. l,pp. 56-64). — The authors conducted numerous experiments in the filtration of 

 rinderpest virus under different conditions through different filters. The passage of 



