494 



sisting. The relation to the head of the pancreas is not specifically 

 mentioned. Zuckerkandl (16), however, figures a sagittal section of 

 a late foetus showing the transverse colon completely adherent to the 

 anterior surface of the head of the pancreas. In order to determine 

 whether this relation is constant, I have made a careful examination 

 of thirty- two foetuses, varying from 5,5 cm to 52 cm total body 

 length. Of these thirty-two cases, twenty-three showed the transverse 



Fig. 4. Same as Fig. 3, after removal of the transverse colon and the parietal peri- 

 toneum. A portion of the splenic flexure is hidden under the base of the spleen. X 3. 



In addition to the lettering of Figs. 2 and 3: D.J. duodeno-jejunal flexure. 

 Duod.inf. Pars horizontalis inferior duodeni. /(. head of pancreas, anterior surface. 

 S. sujierior mesenteric vessels. U. ureter. 



colon adherent to the anterior surface of the head of the pancreas. 

 Of the nine cases where the transverse colon was not adherent, three 

 belonged to the third month, where the colon is still provided with 

 a free mesocolon throughout. Excluding these, we find that of the 



