VETEKINARY MEDICINE. 385 



symptoms, post-mortem appearances, differential diagnosis, and the manner of 

 dealing with it, including the production of antihog cholera serum and its use. 

 reports received from different States as to serum production, and the text of 

 the Maryland law for the production and testing of the serum and similar 

 products, which went into effect July 1, 1912. 



Injection experiments with salvarsan in the treatment of the pectoral 

 form of influenza of the horse, W. Tetpig (Impfversuchc niit Salvarsan gcgen 

 (lie Bnistseuchc der Pferde. Inaug. Diss., Univ. Leipsic, 1911, pp. Jf6). — The 

 author's investigations show salvarsan to give very successful results in the 

 tn\atuient of this disease. A bibliogniphy of G3 titles is appended. 



Bacteriolog'ical investigations in regard to tuberculosis in the horse, ZwicK 

 and Zkllek (Arb. E. Gsndlii.'<a)n1., ',3 {1013), No. J,, pp. .'iS3-501,) .—T\\e investi- 

 gations show that among 8 horses, the disease was produced in 5 cases by the 

 bovine type of bacillus. Of the remaining 3 animals, the organisms obtained 

 from 2 were characterized by a more luxuriant growth than the bovine type 

 of bacillus gives, but so far as virulence is concerned, they behaved like the 

 bovine type. The other strain showed an attenuated virulence toward the 

 rabbit. 



The disease in the horse is probably of bovine origin. 



Canine anaplasmosis, C. Basile (Fathologica, 4 {1912), No. 87, pp. 358-360; 

 abs. in Trop. Vet. Bui, 1 {1912), No. 1, pp. 13, i4).— The author reports upon 

 a case of this disease in a dog at Messina, Italy. The parasite was observed 

 in smears made from the peripheral blood of an adult dog, which was in a 

 very anemic and poor condition. The disease was experimentally transmitted 

 from the affected dog to a month-old puppy through the intraperitoneal in.iec- 

 tion of blood. The inoculated dog remained healthy until the tenth day after 

 inoculation, but Auaplasma was found in smears of the hepatic and peripheral 

 blood stained with Giemsa. Blood drawn from the liver of the experimentally 

 infected dog was in.iected into the peritoneal cavity of a second puppy. This 

 second dog refused all food after 24 hours and died on the third day, the course 

 of the disease having been very acute. The parasites were found in the blood 

 of the peripheral vessels, spleen, and liver. 



Important poultry diseases, D. E. Salmon ( U. 8. Dept. Agr., Farmers' Bui. 

 530, pp. 36). — This is a popular discussion of the diseases of poultry, with 

 preventive measures and remedial treatment therefor. 



Variations in a chicken sarcoma caused by a filterable agent, P. Rous and 

 J. B. Murphy {Jour. Erpt. Med., 17 {1913). No. 2, pp. 219-231. pis. .9).— 

 " Variations are described which have from time to time occurred in the struc- 

 ture and behavior of a transplantable, spindle-celled sarcoma of the fowl, a 

 growth caused, as elsewhere shown, by a filterable agent. Of late the grovrth 

 has frequently given rise to fatal hemorrhages from its substance. In some 

 of the recent, rapidly growing tumors the cells have tended to be spherical, 

 showing only a very tardy and imperfect differentiation to the spindle form. 

 A giant-celled form of the growth is sometimes met with. Despite their diver- 

 sity the tumors grade into one another and in the final analysis are all to be 

 considered as spindle-celled sarcomata. Attempts to obtain an action of the 

 etiological agent upon cells other than those it usually affects have failed, as 

 have attempts to bring about changes in the histology of the sarcomata by 

 attenuating the agent. 



" Some of the lesser morphological variations in the sarcoma are undoubt- 

 edly due to local conditions in the host, and of the more important changes 

 some have been associated with an increase in the growth's malignancy. For 

 others the determining conditions have yet to be discovered. On the whole the 

 variations described are not more marked than those occasionally manifested 



