AND MALFORMATIONS OF THE FEET. 85 



arises. It will be remembered that the structure 

 of the frog is such that its external coat shells oft' 

 in due time. When, however, this coat is arti- 

 ficially removed, the surface, which is then fresh 

 exposed, is not at that time adapted by Nature to 

 resist the effect of wet and dirt, and is therefore 

 very susceptible of injury. 



In the treatment of those cases of thrush which 

 originate in wet and dirt, our first care must be to 

 remove the cause, and our next to keep the frog 

 scrupulously clean and dry. The removal of any 

 ragged or partially detached parts will lessen the 

 difficulty of keeping clean a diseased frog. 



Having removed the cause, our further endeavour 

 must be to absorb the discharge. This will be 

 best effected by inserting pledgets of dry tow into 

 the cleft. The process of drying up the secretion 

 may be hastened by the application of zinc or other 

 astringent lotion. Further, with a view of restor- 

 ing the parts to a healthy action, pressure should 

 be applied. This may be effected by lowering the 

 crust at the heels every fortnight. 



When the disease in the frog has arisen from 

 deprivation of its natural functions, the treatment 

 will be, first, to dry up the discharge ; and, secondly, 

 to endeavour to bring about a more healthy state 

 of the organ by subjecting it to wear and pressure. 

 The means of giving this pressure will consist 

 mainly in the absence of paring, in lowering the 



