12 THE PRACTICE OF VETERINARY MEDICINK 



tion to the highly sensitive parts, and affording an explana- 

 tion for the troublesome cough which in so many cases fre- 

 quently exists for months after the acute symptoms of 

 laryngitis have disappeared. 



Thickening of the mucous membrane is to be treated 

 by a course of jDotassium iodide internally, and frequent 

 application of vesicants externally, into the composition of 

 which it is recommended that a certain proportion of 

 iodine, or potassium iodide, be allowed to enter. When it 

 is suspected that the process of atrophy of the laryngeal 

 muscles is going on, chlorate of potash should be given M^th 

 the view of arresting the muscular degeneration. Xerve- 

 stimulants may also be tried. 



Ulceration of the rima glottidis, etc., is to be treated 

 w4th a caustic solution, as argent, nitras, or hydrarg. 

 perchlor., 5ss. or so, to aqua 5i., to be applied a couple of 

 times daily to the affected part by means of a soft sponge 

 firmly secured on the end of a rod. 



CROUP. 



Croup is occasionally noticed in young cattle, manifested 

 by violent abdominal breathing, increased temperature, and 

 a peculiar crowing sound, with a very anxious expression, 

 staring eyes, a frothy discharge from the mouth, and a dis- 

 charge of mucus from the nostrils ; pulse quick and full 

 during the early stages, becomes feeble and indistinct in 

 cases that are about to terminate fatally ; violent and con- 

 stantly recurring fits of coughing, expulsion of false mem- 

 brane, etc. 



Causes. — The disease is caused by exposure to cold, by 

 running on low-lying, wet land, damp and badly ventilated 

 quarters, etc. 



Treatment is about the same as in laryngitis : inhalations 

 of steam containing iodine, chloroform, etc. Counter- 



