PANCREATIC JUICE. 



233 



Composition of Pancreatic Juice. The pancreatic juice has been 

 obtained repeatedly from the dog and the rabbit by the operation 

 of establishing a permanent pancreatic fistula. For this purpose 

 that portion of the duodenum of a rabbit into which the main 

 duct discharges, which in this animal is about 35 cm. below the 



FIG. 131. Stomach in place after removal of liver and mass of intestines: A, 

 diaphragm; B, B', thoraco-abdominal wall; C, right kidney with c, its ureter; 

 D, right suprarenal capsule ; E, left kidney with e, its ureter ; F. , spleen ; G, apon- 

 euroses of transversales : H, H', quadrati lumborum ; /, /', psoas muscles; K, esoph- 

 agus ; /,, stomach ; M, duodenum. 1, cardia ; 2, greater curvature ; 3, lesser curvature ; 

 4, great tuberosity or fundus; 5, small tuberosity or antrum of pylorus ; 6, pylorus; 

 7, right vagus ; left vagus ; 9, thoracic aorta ; 9', abdominal aorta ; 10, inferior dia- 

 phragmatic arteries; 11, celiac axis; 12, hepatic artery; 13, right gastro-epiploic ; 

 14, coronary artery ; 15, splenic artery ; 16, 16', superior mesenteric artery and vein ; 

 17, inferior mesenteric artery; 18, spermatic artery; 19, gall-bladder; 20, cystic 

 duct; 21, hepatic duct; 22, inferior vena cava ; 23, portal vein; 24, great sympa- 

 thetic (Testut). 



opening of the bile-duct, is opened and a glass cannula is intro- 

 duced into the duct and the secretion collected as it escapes. The 

 amount thus obtained from rabbits is very small ; it is clear, color- 

 less, alkaline, and does not clot. That obtained from fistulse in 

 dogs is thicker, and coagulates on standing, although it is less thick 

 after the h'stulse have existed for some time. The specific gravity, 



