THE FORM OF THE HUMAN STOMACH 



499 



corresponding position. Similar epithelial nodules were fre- 

 quently found by Lewis and Thyng in young pig embryos, but 

 they hesitated to interpret them as pancreases because of their 

 abundance, and because they were never seen to branch like true 

 pancreases. They may, however, as Elze has shown, be dis- 

 tinguished from the epithelial pockets of the gall-bladder" and 



D.ch 



Du. -fe 



P.py/ ^_~-- 



Fig. 12. Section through an abnormal stomach of an embryo of 19.3 mm., H. 

 E. C. 1597, section 730, X 35 diam. A.m.s., arteria mesenterica superior. B.om., 

 bursa omentalis. C, corpus gastri. D.r/i., ductus choledochus. Du., duodenum. 

 L., lien. P.ac, pancreas accessorium. P.py-, pars pylorica gastri. 



small intestine which these authors described, and which seem 

 to be transient irregularities of the expanding tubes. Accepting 

 the small, round, compact nodules as accessory pancreases, we 

 may conclude that they arise at about the time when the normal 

 pancreases become established, and usually at no great distance 

 from them, either up or down the intestine. Subsequent elonga- 

 tion of the tube may carry them farther away. They may be 



