226 INORGANIC AGENTS 



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

 benefited 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 anemia and may be conjoined with bitters or iron. 



Arsenic is indeed the next best remedy to iron in anemia, 

 and, in pernicious anemia and leukemia, it is the remedy offer- 

 ing the greatest chances of improvement, when given in gradu- 

 ally increasing doses until horses are taking as much as one 

 ounce of Fowler's Solution, twice daily; and dogs one-half 

 a dram. 



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 chronic 

 squamous, or papular eczema, lichen, acne and chronic urticaria, 

 when given for a considerable length of time in small doses. 



In the human subject, arsenic is almost a speciflc 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. The same treatment should 

 be tried in diabetes mellitus in dogs. Large single doses of 

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

 and aloes (3iv.), 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 Solu- 

 tion. The administration of Fowler's Solution secures more 

 rapid and accurate results than that of white arsenic. 



*Atoxyl (CoHsNHAsOj) has recently been used as a substitute 

 for arsenic in severe anemias given under the skin every otlier day. It 

 is a white powder, soluble in 6 parts of water, and contains 26 per cent, 

 of arsenic, but may be given in 10 to 20 times the dose of arsenous acid. 



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