42 SPECIAL CATTLE THERAPT 



When the instrument has been entered the trocar 

 is pulled out of the canula at once, allowing gas and 

 food particles to spurt out. It is well to stand to 

 one side when this is done, because frequently fluids 

 are forced out far enough to soil the surgeon's clothes. 

 When portions of ingesta blot-k the lumen of the can- 

 ula, the trocar is passed in and out a few times to 

 dislodge them. 



If proper medicinal treatment is at hand so that 

 it can be at once administered, the canula may be 

 withdrawn as soon as the distention has gone down. 

 If it is not convenient to administer correct medicinal 

 treatment at once, the canula should be left in place 

 until all dangei' of a renewal of the gas distention 

 is past, if necessary for several hours. During this 

 time some one should remain in attendance for the 

 purpose of keeping the canula free from blocking with 

 food. 



When the canula is to be removed, the trocar should 

 first be passed into it, removing the trocar and canula 

 together with one or two quick jerks. The point of 

 entrance should be given a thorough application of 

 tincture of iodin. 



Administration of medicaments through the canula 

 for the abatement nf tlie fermentive process in the 

 rumen we have found wholly unsatisfactory. In the 

 medicinal treatment of this condition we have ob- 

 tained the best, most prompt, and most satisfactorily 

 uniform results from four ounces each of aromatic 

 spirits of ammonia and oil of turpentine, administered 

 in a pint or two of watei' in the form of a drench. 

 Credit for this tieatnient belongs to Dr. J. M. Wright, 

 formcT'ly of Chicat>u but now I'otired. Even scv(n'ely 

 grave attacks of tympanites yield almost instantly to 

 one such dose. In a period of practice covering more 



