26 SPECIAL VETERINARY THERAPY 



evidence thereof is a slight fullness or thickening, with 

 local heat. Occasionally cases of this form occur 

 which are only cured after the animal has been given 

 a protracted rest from service in the collar. It is pos- 

 sible, sometimes, to accomplish much by substituting 

 a breast collar. 



Cases in which the horse shows no especial vicious 

 disposition, usually terminate favorably with a few 

 weeks' treatment with Prof. A. H. Baker's "toughen- 

 ing lotion." This is applied two or three times daily 

 with the hand, thoroughly painting the entire collar 

 seat with it. It is made by dissolving two ounces of 

 tannic acid in six ounces of dilute acetic acid and 

 two ounces of powdered alum in six ounces of water. 

 Mix them and it is ready for use. 



A zinc-lined pad should be used for these cases. 



In the more desperate type of these cases, in which 

 the foregoing treatment has not accomplished any- 

 thing, an entirely different procedure is necessary. 

 The deep, underlying dermatitis in such cases is not 

 benefited by topical applications. From various 

 salves, lotions and other treatments which have been 

 applied, the epidermis has assumed a tough, pachy- 

 dermal character and local treatment is useless. Such 

 cases are cast, either on the ground or table, and the 

 epidermis is shaved off the entire region with a sharp 

 sage knife. Oozing of blood must be the guide for 

 the depth of the shaving. It is well to have several 

 sharp knives at hand. 



When shaving process has been thoroughly gone 

 through, having paid special attention to the bottom 



