Diseases of the Circulatory System 193 



blood of an affected fowl can produce the disease in a healthy 

 one. 



Treatment. — The disease has been successfully treated 

 with atoxyl/ and with salvarsan (606).^ The best treat- 

 ment is prevention by keeping the fowls free from ticks. 



Prognosis. — About one-third of the affected fowls re- 

 cover if untreated. 



^ Levaditi et Mcintosh, "L'influenoe de I'atoxyl sur la spirillose 

 provoquee par le Spirillum gallinarum." Comptes Rendus Soc. Biol., 

 T. 62, 1907. 



Uhlenhuth u. Gross, "Untersuchungen tiber die Wirkung des 

 Atoxyls atif die Spirillose der Hiihner." Arb. K. Gsndhtsamt., 15d, 

 27, pp. 231-255, 1907. 



2 Hauer, A., Centbl. Bakt. Bd. 62, pp. 477-496, 1912. 



