8TDD BOOK. 95 



clyster, except that linseed oil may be used for the 

 expulsion of ascarides, or needle worms 



In epidemic catarrh, when the horse sometimes 

 obstinately refuses to eat or to drink, his strength may 

 be supported by nourishing clysters ; but they should 

 consist of thick gruel only, and not more than a quart 

 should be administered at once. 



TRACHEOTOMY. 



" This operation consists in making an opening inta 

 the windpipe to admit air to the lungs, when the 

 natural passage is obstructed by foreign bodies, or 

 when its calibre is lessened by tumefaction occasioned 

 by disease. In severe cases of laiyngitis, strangles, 

 and their kindred diseases, when the patient seems 

 almost suffocated, tracheotomy should be immediately 

 performed. In performing the operation, we select a- 

 spot about six inches below the throat, in front of the 

 neck, and over the region of the windpipe ; an incision 

 is to be made with a common penknife (in lieu of a 

 better instrument), to the extent of two or three- 



