296 EXPERIMENT STATION RECORD. 



Serum treatment for infectious diarrhea of calves, P. Heurgren (Svensk 

 Vet. TidsJcr., 10 {1905), No. 1, pp. 30-3$).— The author made use of Jensen's polyva- 

 lent serum in tin- treatment of 10 calves for the prevention of diarrhea. The disease 

 had appeared in 20 calves on the same estate before this method of vaccination was 

 adopted. All of the treated calves appeared to be rendered immune, since no case 

 developed among them. * 



Sorghum poisoning-, W. R. Perkins (Mississippi Sta. Rpt. 1904, pp. 35, 36).— 

 Hydrocyanic acid was found in the stomach of a cow which died suddenly, and in 

 sorghum from the held where she had grazed. The only plat of sorghum found to 

 contain traces of the acid had made the most luxuriant growth. 



Poisoning of cattle from Ranunculus sceleratus, Honscher (Ztschr. Veter- 

 inark., 17 (1905), No. 3, pp. 107, 108).— Cattle fed on wild hay containing Ranunculus 

 sceleratus were seriously affected. In a herd of 25 cows, 4 showed evidence of great 

 cerebral excitement and spasms. Two died and exhibited considerable irritation of 

 the gastric mucous membrane. 



The occurrence of filaria embryos in horses and cattle, A. E. Ten Broeke 

 ( Tijdschr. Veeartsenijh, 32 (1905), No. 6, pp. 255-257).— In horses infested with filaria 

 the appetite was very poor, but the pulse and respiration were almost normal. 

 Edematous swellings were observed in 2 cases. Fowler's solution was administered 

 in large doses without favorable results. Death took place after a few days. Similar 

 results were had in attempts to treat cattle. 



Surra and the differentiation of trypanosomiases, A. Laveran and F. Mesnil 

 (Compt. Rend. Acad. Sci. [Paris], 140 (1905), No. 13, pp. 831-836).— As a result of the 

 study of these diseases the authors recognized several forms occurring in different 

 countries. It appears that there are 3 recognizable forms of surra distinguished by 

 their virulence and occurring in India, Mauritius, and Mbori. The methods which 

 have proved efficacious in the hands of the authors in the differentiation of trypano- 

 somiases may be used in distinguishing these forms of surra. 



The tsetse-fly disease and immunization of domesticated animals, E. 

 Martini (Ztschr. Ilyg. u. Infectionskrank.,50 (1905), No. 1, pp. 1-96, pis. -2, figs. 17). — 

 The morphology and biology of the trypanosome of tsetse-fly disease is discussed in 

 great detail in connection with a series of experiments carried out by the author. 



Numerous tests were made in passing the trypanosomes through various animals 

 by means of inoculation. As a result of these experiments it was found that 2 races 

 of blood parasites of this disease may be recognized according to their different viru- 

 lence. One race proved to be fatal for the horse, ass, dog, cat, hog, goat, rabbit, 

 etc., after subcutaneous, intraperitoneal, or intravenous inoculation. 



Evidence was obtained that horses may carry the blood parasites for years and 

 remain in good health. Some difference of opinion prevails, however, regarding the 

 nature of this apparent immunity and its duration. A healthy animal carrying 

 blood parasites of low virulence may not be immune, however, to blood parasites of 

 another race. 



Report on dourine in different breeds of equines, A. Lingard ( Calcutta: Supt. 

 Govt. Printing, India, 1905, pp. V 84 NCIX, ph. 16).— In this volume the author 

 presents an elaborate account of his experiments on dourine in India, together with 

 an account of vesicular exanthema and piroplasmosis which in certain cases occurred 

 as complications. 



The volume includes a general discussion on the nature of dourine, clinical notes 

 on a large number of spontaneous and inoculation cases, the period of incubation, 

 eruption of plaques, the biology of the blood parasite, symptoms, diagnosis and course 

 of the disease, and susceptibility of different animals. It was found that whenever 

 a cutaneous plaque appears during the course of the disease the pathogenic trypan- 

 osoma is present at that point in one or more of its developmental forms. 



