HERPES TONSURANS 103 



ritus, which the animal demonstrates by rubbing the 

 part on posts and other objects. 



In the course of three or four weeks the nodules in- 

 crease to a considerable size. They are no longer 

 rounded, but now appear irregularly flattened and 

 raised on the normal skin surface. Their color is of a 

 greyish, ashlike tint, and their thickness sometimes 

 exceeds half an inch. In the anal and vulvar region 

 they usually assume a very irregular outline and frc- 

 (juently occur in clusters in these locations. 



The immediate outer edge of the formation is usual- 

 ly free, and a considerable portion can be jerked loose 

 without disclosing any vascular basic attachments. We 

 frequently have seen these bark-like formations assume 

 the size of the hand. 



The disease evidently interferes in some manner 

 with the nutrition, because the animals affected lose 

 some weight, almost invariably. This impairment of 

 the usual well-being can hardly be attributed to the 

 irritation which exists because, as a rule, after the 

 nodular stage has been passed there is apparently lit- 

 tle or no pruritus. 



The treatment of this form of ring-worm disease 

 is quite satisfactory. Those of the formations that are 

 quite loose are forcibly removed and the underlying 

 active base is then painted twice daily with pure iodin 

 tincture. A week of these paintings terminates the 

 trouble here. 



The formations which can not be safely extracted 

 because of extensive contact with the dermal tissues 

 are to be soaked several times daily with olive oil to 

 which a small proportion of volatile oil has been added. 

 After five to seven days of these oil soakings most of 

 the formation can be removed without trouble. The 

 exposed active area is then submitted to the iodin treat- 

 ment twice daily until cured. 



