192 ROBERT K. S. LIM 



of the cell, in which the nucleus is situated, and which is 

 stained of a reddish colour by Mallory. 



The surface cells show a larger goblet part than the duct-cells 

 (see PI. 8, figs. 3 and 5). During active digestion this part 

 diminishes in size, but in both fasting and feeding animals cells 

 in which the goblet part is defined but not stained may be seen. 

 This presumably indicates that the cells in question have 

 discharged their contents and have not had time to supply 

 the part with new material (granules). 



With regard to the mode of attachment of the cells to one 

 another I have sometimes observed the intercellular bridges 

 described by Carlier (5 a). These, however, are only apparent 

 when the cells appear unduly vacuolated. In sections tan- 

 gential to the surface I have seen no indications of bridges. 



The surface epithelium is continuous with the epithelium 

 of the gland-tubes, the transitional cells losing their goblet 

 portions and staining a uniform bluish colour with Mallory. 

 The transition is short (see PI. 8, iig. 5, t). 



The Cardiac Kegion. 



The junction of the oesophagus and the stomach is well 

 defined in the cat, the stratified epithelium of the former stop- 

 ping abruptly and being replaced by the columnar epithelium 

 of the latter. At this junction a lymph follicle may sometimes 

 be seen, but there is more frequently a large vesicle or cavity 

 lined by one or two laj^ers of cubical cells. 



The cardiac region (when present) is extremely narrow, 

 measuring about 2-3 mm. from the cardio-oesophageal junction 

 to the nearest group of parietal or oxyntic cells. It includes 

 only cells of one type (cardiac cells) unmixed with others. 

 Beyond this there is a boundarj- zone extending for another 

 3 mm., which contains both oxvntic and cardiac cells. 

 Frequently there is no definable cardiac area ; oxyntic cells 

 are found at the junction itself and only the ' boundary zone ' 

 is present. Beyond the boundary zone another type of cell, 

 characteristic of the fundus, is met with : this may be regarded 

 as the cardiac limit of the fundic region. 



