26 SYNOPSIS OF VETERINARY 



resorted to. It assists in the removal of worms. Useful in 

 chronic diseases of the air passages. Relieves irritable chronic 

 coughs, and roaring in early stages, as well as thick and broken 

 wind, and heaves. As an alterative modifying .tissue change, 

 it is prescribed in the early stages of tuberculosis, chronic rheu- 

 matism, chorea and epilepsy. It prevents periodically return- 

 ing fevers. In anaemia it increases both red and white blood 

 corpuscles. 



For chorea in dogs commence with a small dose, three times 

 daily and increase a minim per dose every third or fourth day until 

 the physiological limit is reached (i. e., oedema and itching of 

 the eyelids, etc.). 



Action on the Skin. — Administered internally it stimulates 



the dermis and hastens the removal of epidermal cells ; hence it 



is useful in all chronic skin diseases, as chronic eczema, scab, 



mange and warts. To remove warts that occur in the mouth 



and on the muzzle of horses and other animals, give internally 



and apply locally Fowler's Solution (full strength locally). In 



malarial disorders use : 



Fowler's solution, 3 ss. 



Compound Tr. Cinchona, 3 i- 

 Repeat 3 or 4 times daily. 



In chronic skin diseases use Donovan's or Fowler's Solution 

 or acidum arsenosum and sulphur mixed in the feed. Useful 

 internally in successive crops of boils and in chronic urticaria. 



Externally. — The white arsenic or arsenous acid is used to 

 slough out tumors, fistube, etc., but it is too painful. Prof. 

 Williams recommends it in foot-rot. The affected sheep should 

 be slowly driven through a trough containing a tolerable strong 

 solution of arsenic. It is used for sheep to destroy ticks. In 

 this way animals are sometimes poisoned, as it drips on the grass 

 and other animals eat it. It is used to harden and dry specimens. 



Toxicology of Arsenic. — Full medicinal doses if long con- 

 tinued, cause oedema and itching of the eyelids, increased flow 

 of saliva, nausea, vomiting of mucus, diarrhoea or dysentery, 

 weak heart, soreness to the touch over region of the stomach, 

 itchy skin with small eruptions, jaundice and albuminuria. In 

 long continued doses it diminishes oxidation, decomposes album- 

 inoid tissues and produces fatty degeneration ; also impairs the 



