474 Veterinary Medicine. 



The symptoms in all such cases will vary with the potency of 

 the factor and the susceptibility of the skin. Besides the common 

 symptoms the color and odor of the skin will often yield valu- 

 able diagnostic indications. There is the white of muriatic acid, 

 carbolic acid or zinc chloride, the black of silver salts or sulphuric 

 acid, the yellow of iodine, chromium compounds and nitric acid, 

 the well known odors of ammonia, iodine, chlorine, carbolic acid, 

 tar, essential oils, chloroform, ether, formaline, kerosene, mus- 

 tard, etc. 



Treatment is that of simple erythema after one has applied the 

 appropriate antidote to the particular irritant. For the alkalies 

 and carbolic acid use vinegar, for the acids oxide or carbonate of 

 magnesia, chalk or lime water, for iodine and chlorine weak al- 

 kaline solutions, for rhus, ammonia or other alkali, or potassium 

 permanganate, and for insect stings and animal venoms, alkalies 

 or permanganates. The caustic salts may demand milk, white 

 of egg, or some other albuminous solution. When no chemical 

 antidote is available, the first step is to wash off the offending 

 agent, and then treat the erythema. 



