S. YüSCHIDA 215 
structure, particularly is there no difference between the first and second 
regions. 
(Ill) The Pylorus Gland of the Rat. 
Then next come the Pylorus glands, as they are commonly called, under 
consideration. The walls of the glands are composed of tall cylindrical cells, 
arranged regularly and compactly put together, just like those in the cardia 
gland. In the majority of mammals the glands send off branches at their 
basal i^art, and those of the second order which are more or less contorted 
pass over without sharp demarcation into the duodenal gland. In the species 
in question, the pyloric glands are, on the contrary, straight, and show not 
even a tendency of ramification, consequently the glands push, into the 
submucosa layer, but are confined to the outside of the muscularis mucosa 
stratum. In this respect the pyloric glands are very easy to distinguish from 
the cardia glands which bear a great resemblance to them and show sharp 
contrast to the duodenal glands with which they are in close annex. 
The cells of the pylorus gland may be divided into two kinds : the super- 
ficial epithelium cells of the pylorus gland, which are tall cylindrical cells 
compactly bound together, and the cells which enclose the branched end 
part which are somewhat apherical and bear clear contents. 
The colour reaction of the former cells is similar to the superficial epithel- 
ium cells of the fundus glands, and that of the latter to the chief cells of the 
fundus gland. 
There is no difference between the histological structure of the superficial 
cells of the fundus and pylorus glands. 
In 1894, Sappey obtained a similar result. 
In 1869, Klein found Parietal cells among some Pylorus glands I, how- 
ever, have not been able to find such in this case, but in the intermediary form 
glands between the Pylorus and Fundus which are found in connection with 
these two glands, I have sometimes seen them. 
In 1870, Ebstein, gave to this same gland in the dog and cat, the name 
