494 Pancreas in Embryos of the Pig, Rabbit, Cat, and Man 
creas than has been modeled heretofore in the rabbit. In the drawing 
(Fig. 4) the model is viewed somewhat ventrally from the right side. 
The stomach (S¢.) has revolved to the left, so that the pylorus extends 
towards the right side of the embryo. The duodenum extends from the 
pylorus transversely across the median line to the right, then descends 
for a long distance on the right side of the portal vein, ventral to the 
right Wolffian body. It then turns back on the median side of its de- 
scending course. Slightly to the right of the median line at the top of 
the long descending branch of the duodenum, the bile duct (D. chol.) 
Pane.v 
D. pane.d. 
Dix 
Fic. 3: Reconstruction from a rabbit embryo of 14 days, 11 mm. (H. E. C. 
1327). % 55 diams. The lettering is the same as in Fig. 2. 
joins the intestine. Entering the bile duct quite close to its intestinal 
orifice, we see the duct of the ventral pancreas (D. panc. v.). By com- 
paring Figs. 2 and 3 we see that essentially the same process 6f develop- 
ment has occurred in the rabbit as in the pig. Simultaneously with the 
formation of the duodenal loop, the opening of the duct of the dorsal 
pancreas (D. panc. d.) has been carried a long distance beyond the open- 
ing of the common bile duct. 
The ventral pancreas (Pane. v.) extends across the proximal part of 
the dorsal pancreas (Pane. d.), the two having anastomosed at the place 
of crossing. From the investigations of Schirmer, 93, and Joubin, 95, 
it would appear that an anastomosis at this place does not occur invari- 
ee 
