On the Histogenesis of Gastric Glands. 511 
Aten 
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Fig. 22. Complete tubule of fundic region. 23 cm. Neutral gentian. Cyto- 
differentiation is practically complete. (29 cm is about the birth-length). 
Fria. 23. Cross section of fundic tubule. 23 cm. Three color. 
Fig. 24. Cardia. 25 em. a. Foveolae. Mucous chief and goblet cells. 6. 
Tubules. Mucous chief and parietal cells. 
Fias. 25 and 26. Cross and longitudinal sections taken at the bottom of a 
cardiac tubule. 29cm. (just before birth). This shows the parietals, which later, 
by the third week of post-uterine life, disappear or become converted into mucous 
cells. 
