878 THE AMERICAN NATURALIST. [Vol. XXXVIII. 



of the intestine. Durin^^ the early part of this process, while 

 the endoderm cells are still fiat or cubical, and before their final 

 differentiation has taken place, their nuclei exhibit unmistakable 

 evidences of amilosis. I-i.i;. 91s taken from such an embryo. 

 The food ()\ urn, i)art of which is shown in the figure, is still 

 mtaet , It has not yet undergone the breakdown of structure 

 whu h IS soon to take place. The endoderm is composed of 



