22 



and often exhibit nodules as large as a hen's egg^ as 

 seen in Plate VIII. 



Numerous cases of infection after castration and 

 strangles were observed. Those following castration 

 were most difficult cases to deal with as schirrus cord 

 supervened, and the scrotum and sheath became greatly 

 enlarged, indurated, and infiltrated with new formations 

 and multiple abscesses. 



Plate XI shows the disease on the edge of the 

 vulva, and extending to the perinasum, and mammary- 

 gland. 



Those following strangles, as seen in Plate XII, 

 were also greatly protracted, the submaxillary glands 

 and submaxillary space became the seat of multiple 

 abscesses, and the disease extended round the jaw to 

 the cheek along the course of Steno's duct, which also 

 frequently became involved. 



After effecting a cure, numerous chains of cica- 

 trices may remain, sheaths of tendons, and joints may 

 also become affected, causing chronic thickenings and 

 enlargements, and the value of the animals to be 

 greatly depreciated. Tokishige mentions a large num- 

 ber of cases occurring in Japan affecting the testicles, 

 which is accounted for by the fact that the Japanese 

 seldom or never castrate their horses (ponies), and when 

 large numbers of them are collected together (such as 

 in the army) wounds from kicks and scratches on the 

 scrotum are no doubt very common. 



(2) Mucous membrane variety. 



Lesions of the disease on the mucous membrane 

 have been noticed by me in some 7 to 10 per cent, of 

 cases, e.g,^ on the membrane, covering the lining of 

 alae of nostrils, covering septum nasi and nasal 

 organs, lining the sinuses of the head, the pharynx, 



