PLATE 2 



EXPLANATION OF FIGURES 



19 Wax reconstruction of the epithelium of the upper part of the rectum. 

 Human embryo of 58 mm. X 89; x, epithelial gland cyst. 



20 Wax reconstruction of the epithelium of the transverse colon. Human 

 embryo of 65 mm. X 89. 



21 Wax reconstruction of the epithelium of the descending colon. Human 

 embryo of 65 mm. X 89. 



22 Wax reconstruction of the epithelium of the sigmoid colon. Human em- 

 bryo of 190 mm. X 89. 



228 



