VOMITION. 44:5 



which vomition continues in spite of all treatment, rumen- 

 otomy should be performed if the presence of a foreign 

 body in the rumen be suspected. Acid hydrocy. is very 

 useful to check obstinate vomiting, but must be used very 

 carefully. 



Hair Balls. — Hair balls have been referred to before. 

 They may be found in the rumen, but are more likely to 

 be found in the reticulum. They are formed of hair, and 

 usually caused by animals licking each other ; but the}' 

 have been found in calves a few days old. They gradually 

 increase in size, and finally cause great irritation, giving 

 rise to symptoms similar to those caused by the presence 

 of any other foreign body. The treatment is the same 

 also. 



IMPACTION OF THE MANYPLIES. 



This condition is also very commonly called 'fardel- 

 bound.' The omasum is to all intents and purposes para- 

 lyzed. It may occur as an independent disease ; or may 

 occur as a symptom of some other diseased condition. 

 Hence, although a post-mortem examination may reveal 

 inflammation, or impaction, of the manyplies, the practi- 

 tioner should not jump at the conclusion that either of 

 these conditions was the immediate cause of death. The 

 food becomes tightly impacted between the leaves. 



Causes. — Impaction of the manyplies may, as stated above, 

 occur in consequence of the presence of some other disease, 

 more particularly if chronic. Its secretory power becomes 

 lost, and the food dries up and becomes impacted. It may 

 also be caused by feeding on too dry food, or inferior food 

 which does not contain nutriment in proportion to its bulk ; 

 and it may also be due to an insufficient supply of good 

 water, etc. 



Symptoms. — Usually the first symptom observed is loss of 



