110 UNIVERSITY OF WISCONSIN STUDIES 



illustrations given in the Second Annual Report (1908) of 

 the Live Stock Sanitary Board to the Governor of North 

 Dakota, it is evident that clinically these horses were afflicted 

 with sporotrichosis. Furthermore, organisms obtained from 

 these Dakota horses were declared to be identical by the 

 Bureau of Animal Industry in Washington with the organisms 

 from certain horses afflicted with a similar disease in Penn- 

 sylvania, from which an organism was isolated and clearly 

 shown to be the Sporotkrix schenckii. The Dakota organism 

 was at first taken to be Saccharomyces farciminosus, the cause 

 of lymphangitis in horses as described by Tokishike and Pall in. 

 Through the comparative studies of Paige, Frothingham and 

 Paige, and also of the writer, of the organisms isolated from 

 the Pennsylvania horses and an organism isolated from a 

 human case from North Dakota by the writer, it was shown 

 that the organisms were without question identical. This 

 established the first clear identity of the organism from lesions 

 in horses and in the human and showed too that -it was ap- 

 parently identical with the Sporotrichum schenckii as 

 described by Schenck, Hektoen and others. 



K. F. Meyer 11 has also recently studied this disease in 

 horses. He concludes that spontaneous sporotrichosis in this 

 animal is very common, especially in two localities, Penn- 

 sylvania and North Dakota. He cites a case of accidental 

 laboratory infection in man as proof of the pathogenicity of 

 equine strains for the human. The evidence collected, how- 

 ever, does not support the theory that sporotrichosis is very 

 frequently transmitted from horse to man in the United 

 States. His opinion is that the Sporotrichum schenckii, Sporo- 

 trichum beurmanni, the organisms from mules and horses in 

 Madagascar, and the South American strains are all identical. 

 He proposes the use of the term Sporotrichum schenckii-beur- 

 manni for all. 



11 LOG. cit. 



