VETERINARY MEDICINE. 483 



the chest assumed a monstrous development, due to the appearance of hard 

 mamillated tumors, ranging from the size of a pigeon's egg to that of an 

 ostrich's egg. Similar tumor-like masses, causing a deformity which was espe- 

 cially striking in an animal of pure breed, existed in the cannon region of three 

 of the limbs, the right fore limb only being exempt. They refer to the chronic 

 irritation theory of the genesis of neoplasms and suggest that the chronic irrita- 

 tion induced by the sarcosporidia may in this case have been the cause of the 

 sarcomatosis. 



A bibliography is appended. 



Skin disease (streptococcusblisters) in man supposedly contracted from a 

 case of ray cancer in the horse, Crepet {Abs. in Berlin. Tierdrztl. Wchnschr., 

 26 {1910). Xo. 26. It. 515). — A description of a case of a blacksmith who was in- 

 fected from the hoof of a horse suffering from ray cancer (vegetative iododer- 

 matitis). The constitutional symptoms in the man simulated those observed in 

 the horse very closely. 



Experimental reproduction of oriental sore in the dog, C. Nicolle and 

 L. Manceaux (Compt. Rcud. Acad. Sci. [Paris], 150 (1910), No. H, pp. 889- 

 891). — While it is generally admitted that the transmission of oriental sore 

 takes place through the intermediation of some biting insect, the author thinks 

 that the two factors, man and insect, do not sufficiently explain the etiology of 

 the disease, which in northern Africa always appears at the same time of the 

 year, largely during September and October. In searching for other animals 

 susceptible to the virus, the dog, cat, donkey, horse, sheep, goat, rat, and monkey 

 were inoculated, the dog and monkey proving to be susceptible. In the dog the 

 clinical symptoms are the same as in man and the microscopical findings are 

 similar. The fact that the dog is susceptible is thought to add weight to the 

 theory of a canine origin. 



New contribution to the study of Trypanosoma congolense, A. Laveran 

 (Ann. Inst. Pasteur, :2-'/ (1910), No. 2, pp. 81-95). — The author discusses experi- 

 ments relating to the pathogenic effects of T. congolense on various mammals 

 and distinguishing it from T. (liniorplioii and other species. 



Trypanocidal and spirocheticidal action of pyocyanase, S. Ohkubo (Compt. 

 Rend. Soc. Biol. [Paris], 68 (1910), No. 13, pp. 655, 656; ahs. in Sleepinrj mck- 

 ness Bur. [London] Bui. 18, p. 208). — The author has previously shown that 

 the lipoid substances of pyocyanase possess bactericidal and hemolytic prop- 

 erties. He now finds that a 1 : 500 solution of Lingner's dialyzed pyocyanase 

 immobolizes Nagana trypanosomes and spirochetes (Spirochwta gaUlnarimn) in 

 30 minutes. Further experiments showed that an alcohol-ether extract of pyocy- 

 anase emulsified with saline solution killed the trypanosomes in a dilution of 

 1:1,000 and spirochetes in 1:500; the remainder of the extract had no try- 

 panocidal or spirocheticidal action. His attempts to immunize rats and mice 

 failed because of the great sensitiveness of the experimental animals to. pyocy- 

 anase. 



The action of ultraviolet rays on trypanosomes, H. Bordier and R. Horand 

 (Compt. Rend. Aead. Sci. [Paris], 150 (1910). No. 10, pp. 63ff, 635).— During 

 the course of investigations, studies were made of the action of ultraviolet rays 

 on Trypanosoma lewisii. This trypanosome was killed in 15 seconds when 

 exposed to the ultraviolet rays emanating from Kroniayer's quartz mercury 

 vapor lamp, but was unaffected by a ])rol()nged exposure to the X-rays. 



The manner of transformation of atoxyl into trypanotoxyl, C. Levaditi 

 and J. MclNTOSH (Compt. Rend. Soc. Biol. [Paris], 68 (1910), Nos. 10, pp. hU- 

 Jfl,6; 12, pp. 569-571; abs. in Sleeping Sickness Bur. [London], Buls. 16, p. 128; 

 11, p. 166). — The authors have found that the cells of a tissue which has not 

 undergone any previous trituration can transform atoxyl into tryimnotoxyl. On 



