On 9 



CONTAGIOUS DISEASES. 



The ulcerations of the skin in two of these cases were more 

 numerous than in others observed before or since, and the 

 prescapular glands were swollen in one case. 



In one case the nodules appeared between the external nares 

 and Schneideriau membrane ; in another, on the skin of the 

 breast and fore extremities; in fact, on those parts on which 

 saliva is most likely to be thrown, several nodules about the 

 size of a pea, and two ulcers about the size of a threepenny piece 

 were seen. On no other parts of the hody could nodules or 

 ulcers be found. 



Fig. 10. — Ulceration of skin of lips and cheeks. 



The disease runs a rapid course, the small nodules on the 

 mucous membranes soon becoming prominent, presenting a 

 smooth, round, and sharply defined surface, with a yellowish- 

 white summit, or the epithelium becomes removed, and they are 

 transformed into round or slightly angular ulcers, varying iu 

 size from a threepenny piece to a shilling — they, in their turn, 

 l)ecoming encrusted, somewhat resembling pus scabs. Micro- 

 scopically examined, they were seen to consist of pus corpuscles 

 and epithelial cells, with red blood corpuscles. Fungi and 

 micrococci were also present. The ulcers on the legs were 

 generally larger than those on the mucosa. 



