DISEASES OP HORSES AND CATTLE. 95 



will have a tendency to accumulate again in two 

 or three days. If the animal has not sufficient 

 strength, I find the operation is of little use; but if 

 the animal is strong it will often save its life. 



Chronic Cough.— What is chronic cough? 

 When an animal coughs beyond the limited period 

 usually assigned to a cold, it is called chronic 

 cough. There are several causes of cough in the 

 horse; first, from a thickening of the membrane 

 of the throat caused from distemper or colds; sec- 

 ond, it may be the forerunner of heaves; third, it 

 may be caused from some lung trouble or a nervous 

 irritation of the throat. If possible, find out the 

 part affected; if it is caused by a thickening of the 

 membrane, nothing can be done for it; if it is the 

 commencement of heaves, the treatment for that 

 disease may relieve it for a time; if it is caused 

 by an irritation of the throat, such medicines as 

 opium and belladonna may be tried. There is no 

 sure cure for chronic cough. 



Goitre (Enlarged Thyroid Glands).— This dis- 

 ease consists of enlargement of the glands of the 

 throat just behind the angles of the lower jaw, 

 and is a common disorder in horses and cattle in 

 districts where there is an abundance of lime in 

 the soil, and usually the drinking water is impreg- 

 nated with it. This is said to be the cause, and al- 

 though it is much more prevalent in limestone dis- 

 tricts it is frequently seen in all parts of the coun- 

 try and in animals that are kept in close, badly 

 ventilated stables, and in some cases it follows 

 sore throat. 



