D.ch. 



I'.d. 



L.d. 



L.s. P-'l- 



L. d. 



Pr.v. 



D.ch. 



L.s. 



Int. 



D. ch. 



Duo 



D. ch. 



Duo 



L.s. 



Figs. 4 to 7 Models of the ventral pancreas in pig embryos. X 120 diam. 

 Fig. 4, 5.1 mm. (H. E. C, Ser. 1409). Fig. 5, 6.0 mm. (H. E. C, Ser. 918). Figs. 

 6 and 7, '10 to 12' mm. D. c/i., ductus choledochus. jD?io., duodenum. /?iL, intes- 

 tine. L. d., right lobe of the ventral pancreas. L. s., left lobe of the ventral 

 pancreas. P. d., dorsal pancreas. Pr. v., ventral process of the dorsal pancreas. 



393 



