298 PEINCIPLES OF VETEBINAEY SUBGEET 



large and small blisters form ; contrary to bnrns,^ there is 

 more tendency to necrosis of the frozen parts. 



Third degree : Due to the persistent action of excessive 

 ^cold. The fluids in the skin either congeal or the circulatory 

 •disturbances, viz. : venous stasis, lead to necrosis of the 

 •exposed part, and since the skin is usually overfilled with blood 

 that form of necrosis known as moist gangrene is mostly 

 observed. Suppurative separation of the gangrenous tissue 

 takes place, followed by granulations and finally cicatrization. 



How do you treat congelations ? 



The veterinarian is not often called to treat those of the 

 first degree, should it be the case through friction with snow 

 and ice, until the temperature of the part is about normal, 

 when friction with spirits of camphor and next a dry cotton 

 "dressing are indicated. The main point in such cases is to 

 ^gradually bring about a return of the heat-producing power 

 of the affected part. Freezing of the second and third degree 

 is treated in the same manner as burns of that class. 



W hat prophylactic means can he employed to prevent freezing 

 of the lower extremities of the horse ? 

 The loss in time and money to horse owners from gan- 

 grenous dermatitis either due to partial freezing or infection, 

 or most likely to a combination of these two factors soon after 

 slushy weather sets in, is material. I have for a number of 

 years received excellent results by ordering the hollow of the 

 heel and the coronary region painted with carbolized neats 

 foot oil (carbolic acid 1, neats foot oil 33 parts). This is 

 applied every morning as long as the ground is slushy. In 

 the evening it is washed off and the parts dried by rubbing 

 them with wood shavings, which are used here generally for 

 bedding. While incurring some extra work on the part of 



