OF THE 



^IVERSl 



OF 



TY j 



DISEASES OF THE SEIN. 



711 



SCAB IN SHEEP. 



Tliree 6iTns^f scab are described, viz^ the sarcopticr^dennalo- 

 dectic, and symbiotic. The dermatodectic or psoroptic is tlie 

 common form known in this countr^;_it is intensely contagious, 



S^ioT 133.— T)ermatodecie3 ovisr=^GEBLAOH.y 



^^aiSfreadsiwith great rapidity," the parasite whichtcausessSl 



