494 



FREDERIC T. LEWIS 



P- l".l- 



Figs. 5 to 9 Models of the gastric epithelium in human embryos, as follows: 

 figure 5, 10 mm. Harvard Embryological Collection, Series 1000, X 50 diam.; 

 figure 6, 16.0 mm., H. E. C. 1322, X 35 diam; figure 7, 19.3 mm., H. E. C. 1597. 

 X 30 diam.; figures, 19.0 mm., H. E. C. S19, X 26 diam.; figure 9, 44.3 mm., H. 



