VETEKINARY SCIENCE AND PRACTICE. 1131 



lines, and thorough inspection of all imported horse.<. Spei-ial mention is made of the 

 danger of intrndueing glanders from Russia, and it is suggested that it would 1)6 

 desinilile to prohibit the importation of Russian horses if it were not for the fact that 

 si' many of these horses are needed. 



Horse sickness and its prevention, R. Kocii (-I//r. Jour. Cupe Good JIojic, 24 

 [1904), yo. 4, pp. 505-50S). — This is of the nature of a progress report of the author 

 concerning his investigations of horse sickness in f^outh Africa. Numerous obser- 

 vations have been made on the symptoms and distri1)ution of the disease, together 

 with careful post-mortem examinations. It has been found that animals ~ which 

 recover from the disease are highly innnune. Serum obtained from such animals 

 when inoculated into susceptible animals renders the latter immune to natural 

 infection. 



Horse sickness, 11. \Vatkins-Pitchford [Natal Ayr. Jour, and Mm. liic, 7 

 [1904), No. 2, pp. 190-197). — The author continued his investigations regarding the 

 production of immunity in horses toward this disease. It was found necessary to 

 induce a reactionary fever by means of the virus of the disease. A definite thermal 

 reaction in experimental animals was brought about, whether the virus was intro- 

 duced hypodermically or into the stomach, and a latent infection or reaction per- 

 sisted in most cases for many weeks. The degree of immunity brought al)out by 

 this treatment appears to be rather striking, ])ut has not been testeil by exposure of 

 the treated animals to natural infection. During the j)rocess of iunnunization a 

 negative phase is passed through, or a period in which an increased susceptibility to 

 the disease is manifested. 



An African trypanosoma pathogenic for horses, A. Laveran and F. ^NIesnil 

 [Compt. Rend. Acad. Sci. Paris, 13S {1904), No. 'l2,pp. 732-735, firj. i).— The mor- 

 phological characteristics of Tryj)anosoma dimorphon are carefully descril)ed. The 

 organism is i)athogenic for honses, rats, rabbits, guinea pigs, dogs, goats, etc. The 

 species upon which the authors experimented is considered distinct from T. (jconhiense, 

 and notes are given on the characters by which the two species may be differentiated. 



Alternation of generation and host in a case of Trypanosoma and Spiro- 

 chaete, F. Schaudinx [Arh. K. G'esundheit.^umte, 20 {1904), No. 3, pj>. 387-439, Jigs. 

 20). — The anatomical and biological characteristics, of these two genera are given in 

 detail with especial reference to their easy diagnosis. Particular attention is given 

 to the life history of Trypanosoma noctua.'. This organism occurs in the blood of owls 

 and is apparently carried by Culex pipiens. The anatomy of these mosquitoes ia 

 described with especial reference to their agency in transmitting the blood parasite. 

 Notes are also given on the habits of mosquitoes. The life history of Spirod ale 

 ziemamii is described by way of comparison with that of T. nociux. 



Treatment of mal de caderas, M. S. Bertoxi {Her. Agron., Paraguay, 3 {1903), 

 No. 7-S, pp. 238-240). — The author discusses briefly the use of arsenate of soda, arsen- 

 ious acid, potassium permanganate, corrosive sublimate, quinin, and other treatments. 

 The transmission of the disease is believed to be accomplished through the agency 

 of Stomoxys calcitrans. 



Trypanosoma and trypanosomiasis, with special reference to surra in the 

 Philippine Islands, W. F. ^Iisgrave and M. T. Clegg {Philipjyine l>i'])(. Int., 

 Bureau Govt. Lah., 1903, No. 5., pp. 248, figs. 155). — This report contains a general 

 discussion of animal diseases due to infestation with species of Trypanosoma. The 

 species of this genus which infest oysters, fish, birds, mammals, and man are 

 described and classified in a systematic manner. 



The authors discuss also the various modes of transmission and infection by these 

 parasites, the symptoms of tlifferent forms of trypanosomiasis in various animals and 

 man, the duration, complications, and diagnosis of these diseases, as well as the 

 pathological anatomy, treatment, and serum therapy. In all cases of trypanosomia- 

 sis in which Try}>anosoina evansii is shown to be the parasite, it is recommended that 

 surra be employed as the proper name of the disease. The life cycle of this parasite 



