236 THE STOCK OWiXEr's ADVISEE. 



THRUSH. 



A discharge of a very fetid material from tlie frog, arising 

 from a diseased condition of the secretory surface of the fatty 

 frog. The cleft is the part commonly affected. If neglected, 

 the disease spreads over the whole organ, detaching the horn 

 from the bulbs of the heel to the toe of the frog. Thrush is 

 caused by standing in filthy stables or running in a filthy barn- 

 yard; hence it occurs more frequently in the hind than in the 

 fore feet. The heavy breeds of horses are the most frequent 

 sufferers from thrush. It is not a very serious condition, and 

 seldom produces lameness of any extent. 



Treatment. — Remove the cause and place the animal in a 

 dry stall. It is not necessary to lay the animal off work. ISTu- 

 merous methods of treatment have been laid down by the best 

 authors, some of them very cumbersome. The treatment which 

 I would recommend, and which has proven a direct sj^ecific in 

 my hands, is the application of pure carbolic acid to the frog; to 

 this apply sulphate of zinc in its undiluted form, and mix the 

 two well into the parts. Next, dust calomel over the whole. Use 

 plenty of the acid and zinc, and take time to w^ork it well into 

 the parts. Xext, roll a piece of absorbing cotton in calomel and 

 fill all the little crevices with it, pressing it firmly to the bottom 

 and filling them up. If this is properly aj^plied it will require 

 but one dressing; in bad cases, two dressings. The animal should 

 be kept at work. 



CANKER. 



Canker consists of a malignant growth of a fungoid nature, 

 and usually occurs as the result of an injury, as punctures. 

 Separation of the insensitive from the sensitive sole takes place, 

 and a growth of an extremely vascular nature springs up, ex- 

 tending partly over the foot, causing a considerable amount of 

 suffering. It is generally confined to the heavy horse, such being 

 predisposed to the disease. The characteristic symptoms of the 



