124 DISEASES OF THE EAR. 



disappears, and if the discharge remains profuse, after syringing the ear 

 with warm water, an astringent injection of alum and water, one half a 

 drachm of the former to an ounce of the latter may he used. 



If pieces of bone appear in the discharge, sulphate of copper Ave grains 

 to an ounce of water may be injected instead of the alum. 



After a time as a substitute for the medicated injections, boraoic acid 

 may be freely dusted mto the ear after a thorough syringing with warm 

 water. 



As the appetite returns the most nourishing diet should be allowed, 

 consisting largely of raw beef. Cod liver oU in dessertspoonful doses 

 should be given three times daily, and instead of quinine, the citrate of 

 iron and ammonia may be given in four grain doses with the oil. 



By improving the tone of the blood, nourisblngthebody, and sustaining 

 the strength of the animal, a cure of the local affection may be accom- 

 plished. 



€^OZYPUS. 



The term polypus includes two forms of diseased growths. The first is 

 extremely rare ; it is nearly colorless, fleshy in appearance, and attached 

 by a stalk to the middle of the external ear. Its surface is smooth; it is 

 devoid of sensibility, and often unattended by any discharge. This form 

 of polypus is the result of inflammatory changes which usually subside 

 before the growth appears. 



The second form is not uncommon ; it is the immediate consequence of 

 inflammation and is invariably attended by a discharge. By some it is 

 called the bleeding polypus or hssmatoid ; it varies in size and may be- 

 come sufficiently large to appear at the outer opening of the ear. Its 

 surface is rough and glistening, and deep red in color. It is almost gelati- 

 nous in substance, is exceedingly sensitive, and bleeds easily. This form 

 of growth has usually a deeper origm near the drum of the ear, and is 

 more commonly a consequence of otitis, media or interna. 



Symptoms. — Constitutional symptoms are present in certain cases of 

 polypus ; in others none appear. If they are large growths and attended 

 with pain, the animal by his manner indicates the seat of the disease as 

 in canker. The local symptoms are profuse, offensive discharges, tinged 

 with blood. 



If a dog has experienced an attack of otitis, media or interna, and four 

 or five weeks later ,notwithstanding treatment,a discharge persists, puru- 

 lent, bloody, and of very offensive odor, it is strongly Indicative of the 

 existence of a polypus of the second form. An examination with a spec- 



