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'influenee de I'atoxyl sur la spirillose 

 provoqueeparle Spirillum gallinarum." Com-ptes Rendus Soc. Biol., 

 T. 62, 1907. 



Uhlenhuth u. Gross, " Untersuchungen iiber die Wirkung des 

 Atoxyls auf die Spirillose der Hiihner." Arh. K. Gsndhtsamt., 15d, 

 27, pp. 231-255, 1907. 



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



