USES OF ARSENICAL COMPOUNDS 211 



cough, asthma, emphysema and " broken wind " are greatly 

 benefitted by a course of arsenic, and in chronic conditions 

 the treatment should be sustained for months in small 

 doses. 



"Thick wind " and convalescence from acute bronchitis, 

 pneumonia or influenza are favorably influenced by arsenic. 

 Arsenic is one of the best agents we can prescribe in general 

 debility and anaemia and may be conjoined with bitters or 

 iron. 



In dry, scaly skin diseases, arsenic is the most successful 

 internal remedy, but should not be prescribed in moist con- 

 ditions associated with a proliferation of new cells, or 

 exudate of serum or other liquid. It is particularly useful 

 in psoriasis ; also in chronic squamous, or papular eczema, 

 lichen, acne and chronic urticaria, when given for a con- 

 siderable length of time in small doses. 



In the human subject, arsenic is almost a specific in 

 chorea, but does not seem to yield such good results in that 

 disease in dogs, usually associated with distemper. Fowler's 

 Solution should be given to dogs with chorea, in doses of 

 two or three drops three times daily, and gradually increased 

 till the physiological limit is reached. Large single doses 

 of arsenous acid ( 3 ss.) are sometimes given with calomel 

 ( 3 i.) and aloes ( 3 iv.), in a ball to horses to kill round 

 worms. 



Administration. — Arsenic is given to horses as Fowler's 

 Solution, or arsenous acid, on the food. If continued for a 

 long time, arsenic must be prescribed in small doses once 

 daily, or in larger doses once in two or three days. Arsenic 

 is exhibited to dogs in tablet or pill, and as Fowler's 

 Solution. The administration of Fowler's Solution 

 secures more rapid and accurate results than that of white 

 arsenic. 



