THE GASTKIC JUICE. 211 



minal wall by means of silver or iron wire sutures. The 

 latter is then partially closed by sutures, so as to be of the 

 same size as the incision in the walls of the stomach. If 

 the operator wishes to collect the gastric juice immediately, 

 he can at once introduce a silver tube ; it is better, however, 

 to allow the coats of the stomach to become adherent to the 

 abdominal walls, this generally takes place in a very few days. 

 A drawing of the silver tube best adapted for introducing 

 into the fistula, is shown at Fig. 88. It can be lengthened or 

 shortened by turning the screw D; if introduced immediately 

 after the operation, the tube is partially unscrewed, so as to 

 allow for the swelling which will probably supervene. 

 When this has subsided, the screw is again tightened, and 

 the edges, e, of the tube come in contact with the mucous 



Fig. 89. 



membrane of the stomach. The position of the tube in the 

 stomach is shown by Fig. 89. 



