DESCRIPTION OF PLATE VII. 



Casual Cow-pox. • 



Fig. 1. — Case of W. P , a milker, infected from the teats of a cow witli 



natural cow-pox. There was a large depressed vesicle with a small 

 central crust and a tumid margin, the whole being surrounded by a 

 well-marked areola and considerable surrounding induration. 



Fig. 2. — The same case a week later, showing a reddish-brown crust on a 

 reddened elevated and indurated base. 



