210 



THE GASTEIC JUICE. 



The dog is the animal generally chosen for the perform- 

 ance of this experiment; the very small risk of peritonitis 

 following the operations on the abdomen, render this animal 

 peculiarly well fitted for this purpose. 



The animal to be experimented on is fed shortly before 

 the operation, as the latter is very much facilitated by the 

 stomach being in contact with the abdominal parietes. The 

 dog having been placed on his back, an incision is made in 

 the middle line, starting from the ensiform cartilage, and 

 about two or three inches in length, the peritoneum is care- 

 fully divided ; and the stomach, which is seen distended with 

 food, is seized with the fingers; it is incised to the extent of 

 an inch, and the incision is fixed to the wound in the abdo- 



88. 



