822 EXPERIMENT STATION RECORD. 



The toxicity of red blood corpuscles in immunized animals, F. Battelli 

 (Compt. Rend. Soc. Biol. [Paris'], 67 (1904), No. 84, pp. 17-19). — In these experi- 

 ments rabbits were immunized against the action of the red blood corpuscles of cat- 

 tle and dogs. The immunization was brought about by means of intraperitoneal 

 injections of washed blood corpuscles. It was found that in immunized rabbits, 

 the blood corpuscles or the struma of the blood against which the animal is 

 immunized produce agglutination with great rapidity when injected into the veins. 

 The blood stroma appears to cause a pronounced fall in the blood pressure and 

 brings about the death of the animal by obliteration of the branches of the pul- 

 monary artery. The extract of the blood corpuscles from which the stroma is 

 removed does not produce any immediate effect. The stroma of the blood or the 

 intact red blood corpuscles are inactive if the serum of the injected rabbit does not 

 possess any agglutinating power toward blood stroma. 



The comparative bactericidal power of lymph, blood serum, and pericar- 

 dial fluid, F. Battelli and G. Mioni (Compt. Rend. Soc. Biol. [Paris], 56 (1904), 

 No. 11, pp. 490-492). — During the authors' experiments it was found that in dogs 

 the bactericidal power of the lymph is slightly inferior to that of the blood serum, 

 while the bactericidal power of the pericardial fluid is nil or very weak. It appears 

 that the bactericidal alexin is secreted both in the lymph and in the blood serum by 

 the large mononuclear leucocytes. 



A method of rearing animals immune to surra in tropical countries, 

 Brauer (Berlin. Tierarztl. Wchnschr., 1904, No. 45, ]>}>. 731-786). — Attention is 

 called to the great economic importance of surra and related diseases, especially in 

 tropical countries, and to the necessity of devising some practical means of immun- 

 izing domestic animals against these diseases. 



The author carried out a number of experiments on dogs and other domesticated 

 animals during which it appeared that if animals are exposed from earliest life to 

 infection from spontaneous cases of the disease they may acquire a natural immu- 

 nity which protects them perfectly from subsequent infection. The desirability is 

 suggested of a further series of experiments for the purpose of determining the 

 length of time required by animals for the production of immunity, the influence 

 of milk upon spontaneous cases of the disease as well as in cases due to artificial 

 inoculation and other related topics. 



Leukemia in animals, P. E. Weil and A. Clerc (Compt. Rend. Soc. Biol. 

 [Paris], 57 (1904), No. 24, pp. 21, 22). — A study was made of the nature of this dis- 

 ease, particularly in dogs, for the purpose of obtaining data regarding the patho- 

 logical anatomy, etiology, and transmission of the disease. 



Contagious ulcerative lymphangitis, 0. H. Jewell (Amer. Vet. Rev., 28 (1904), 

 No. 1, pp. 34-87, figs. 2). — The symptoms and course of this disease are described. It 

 resembles farcy to some extent, but attacks the epidermis primarily and is, there- 

 fore, more properly a contagious dermatitis. The pathogenic organism of the disease 

 is a species of cryptpcoccus. In advanced stages of the disease the animal may be 

 affected over nearly the whole surface of the body. Treatment with iodin usually 

 gives better results than the actual cautery. In cases where iodin was ineffective 

 the author used a disinfectant containing corrosive sublimate, salicylic acid, and 

 alcohol. 



Note on the co-relation of several stock diseases occurring among animals 

 in South Africa, A. Edington (Agr. Jour. Cap? Good Hope, 25 (1904), No. 2, pp. 

 189-152). — A number of important diseases in South Africa appear to be peculiar to 

 that country and not known elsewhere. So-called horse sickness is apparently 

 closely related to Veld sickness in cattle. The symptoms and post-mortem conditions 

 observed in cases of this disease are briefly discussed. 



The disease known as heart water can be transmitted from goats to cattle, and 

 appears to be similar in many respects to so-called Veld sickness of cattle. There is, 



