PLATE V 
EXPLANATION OF FIGURES 
17. a,b, andc. Waxreconstructions of intestinal pockets. Human embryo of 
22.8 mm., series 871. X 89. 
18. Wax reconstruction of epithelium of jejunum (first loop in umbilical 
cord). Humanembryo of 22.8 mm., series 871. Showing developing villi. a, ex- 
ternal view: b, internal view. 89. 
19: Wax reconstruction of epithelium of small intestine (mid-region). Human 
embryo of 24 mm., series 24. x 89. 
20. Wax reconstruction of epithelium of ileum. Human embryo of 30 mm., 
series 913. Showing low longitudinal folds. > 89. 
