1'LATK CXVI. 



Fir.. 317. Arrangement of the cannula in a temporary pancreatic fistula. A, the chief pancreatic duct of 

 the dog directed transversely ; a, insertion of the paiu rwuu- ducts into the intestine; the insertion of the 

 smaller duct is higher up, and is marked by a line without a letter; a', a branch of the larger duct within the 

 gland ; a", ligature, fastening the caiinula T to the intestine ; //, is a thread by which the cannula is fastened 

 into the pancreatic duct; I, is the intestine; P I", the pancreas; T, the silver cannula; H, the stopcock, for 

 letting out the pancreatic juice which has accumulated in the india-rubber bag ; v, an india-rubber tag, tied 

 to the outer end of the cannula, and used for collecting the juice. 



FIG. 318. The left-hand diagram shows the method of stitching up the end of the divided intestine so as to form 

 a ciU-de-sac in Thiry's fistula. The right hand figure shows the method of stitching together the divided intestine. 

 The two black dots in the middle of the pit-res already joined, indicate the position of the mesenterie vessels. 

 The first stitch should surround these vessels and serve as a ligature for them. Five or six similar stitches at 

 each side of the first serve to join the one edge, as shown here. The two ends of intestine are then pulled into 

 the same straight line and the junction finished, as shown in fie. 319. 



FIU. 319. Shows the method of applying the final stitches to join the divided intestine in Thiry's fistula. The 

 two ends of intestine are represented as entirely apart, but the other half of the circumference must be understood 

 to lie already sewn together in the manner shown in fig, 318. 



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