R. R. Bensley .. 121 
to the intensity with which the prozymogen (basal filaments) in the 
outer zone ot the ferment-forming chief cell stains. Fig. 4 shows a 
group of such tubules surrounding the ampulla-like duct of one of the 
compound gland groups at the margin of the cesophagus. 
By staining in Heidenhain’s iron hematoxylin the structure of these 
cells can be shown to be exactly like that of the chief cell of the body 
Tubules composed 
of both kinds of _ _ 
Oy 
-_. End of tubule 
cells.~._ , 
Zymogenic cells 
 “Tubule composed of 
mixed mucous and 
zymogenic cells. 
Mucous tubules 
Fie. 4. Portion of compound cardiac gland from the edge of the wsophagus of 
man, showing the two kinds of secreting cells of which it is composed. x 100. 
of the fundus gland (Fig. 3, ¢). The outer zone of the cell is deeply 
stained and indistinctly striated owing to the presence of prozymogen. 
The inner zone contains well-defined zymogen granules which were 
fortunately fairly well preserved in my material. The zymogen gran- 
ules were slightly smaller and less closely a 
cells of the fundus glands. 
There was no constant relation between the point of occurrence of 
the parietal cells and the zymogenic chief cells in these glands. | 
gveregated than in the chief 
re 
