THE ORIGIN AND DEVELOPMENT OF GASTRIC GLANDS. // 



open to the cavity of the stomach. The neck cells, connecting 

 the excretory duct and fundus, appear in a strongly active con- 

 dition (Fig. 15, ?/). This maturing of the gland occurs just at 

 the time of hatching, so that when the DesmognatJius is hatched 

 some of the glands are completely developed (Fig. 13, ;/) while 

 others are still incomplete (Fig. 13, .,). Several days after hatch- 

 ing all the glands open to the surface of the stomach. When 



FIG. ii. Same as Fig. 8. 



this has taken place no more glands are formed in the way just 

 described, but further increase is by a subdivision of the fundus 

 of the gland, in the same manner as later described for the pig. 



Amblystoma, 



In the Amblystoina the gland anlages are not readily demon- 

 strated as the cells of the epithelium lining the stomach are com- 

 pletely filled with yolk. Staining the sections on the slide with 

 hematoxyln, eosin and picro-fuchsin aided materially in over- 



