14 THE PRACTICE OF VETERINARY MEDICINE. 



cartilages composing the larynx may take place, owing t6 

 an improper or insufficient supply of blood, and as a sequel 

 of laryngitis, etc. The arytsenoid cartilage is the one most 

 likely to be affected. 



Symptoms. — The condition is a very hard one to diagnose. 

 Irritation and swelling of the part are usually noticeable, 

 accompanied by a distressing cough, usually of a paroxysmal 

 character. There is also a nasal discharge, which varies 

 greatly in quantity at different times, and is never very 

 profuse, but always very fetid. The cough is excited by 

 the processes of eating and drinking. 



Treatment. — Very little can be done. The throat may be 

 blistered well around, and a solution of argenti nitras may 

 be used to touch the diseased parts, if they are accessible. 

 Potassi iodid., in conjunction with nerve stimulants, may, 

 if used, be attended with benefit ; but the chances are 

 largely against any mode of treatment being successful, the 

 chief difficulty being the situation of the diseased structures. 



NASAL GLEET. 



This disease is also known as Chronic Catarrh, Ozsena, etc. 



Definition. — A catarrhal disease, characterized by a de- 

 fluxion from the nostrils. It may result, in some cases, from 

 a sub-acute inflammation of the mucous membrane lining the 

 nasal chambers, or it may involve the various sinuses of the 

 head. Pus is formed, Avhich undergoes various changes, ac- 

 cording to the length of time it has existed ; and it may be 

 exceedingly fetid, or, on the other hand, may be absolutely 

 devoid of odour. In an old case of nasal gleet, where the 

 bones have become involved in the destructive process, the 

 odour is indescribably offensive, and much worse than the 

 odour emitted by a case of glanders. (It should be borne 

 in mind, however, that either disease may exist in a fully 

 developed form without giving rise to any odour whatever.) 



