PANCEEATIC JUICE. 



335 



pushed away from the duct with the end of the canula or 

 the point of a knife, a small longitudinal slit is made in it 

 with the scissors, and a silver canula about one twelfth of an 

 inch in diameter and four inches in length is introduced and 

 firmly secured in place by a ligature which has previously 

 been thrown around the duct. The canula should be pro- 

 vided with a well-fitting stylet, with the point rounded 30 

 that it may be introduced into the duct with ease ; and the 

 end of the canula should be somew r hat roughened, so that the 

 ligature may secure it well in place. The canula will enter 

 the duct for a short distance only, and it should not be intro- 

 duced forcibly. 



Fig. 8. 



Full-grown shepherd-dog (female), in which a pancreatic fistula has been 

 established. 



A, silver tube to which a bladder has been attached ; B, bladder; C, stop- 

 cock for the purpose of collecting the juice which accumulates in the bladder, 

 (BERNARD, Lemons de Pliydologie Experimental e, Paris, 1856, tome ii.,.p. 197.) 



