S4?8 Sir Everard Home's observations on 
approach to it, than is to be met with on any part of the 
internal surface of the stomach or duodenum ; it also re- 
sembles them in the secretion it produces coagulating milk, 
and none of the inspissated juices met with in these cavities 
affect milk in the same way. From these facts there can no 
longer be any doubt entertained, that the gastric glands have 
the same situation respecting the cavity of the stomach as in 
birds. 
In my former investigation, the analogy of the bird would 
have led me to the same conclusion, had not the gastric 
glands of the beaver, which are more distinct than in any 
other quadruped, been a stumbling block in my way ; but 
now the situation of these glands in the beaver and woombat, 
must be considered as an exception to the general rule, the 
necessary complexity of their structure making them too 
large to admit of their being conveniently placed, as is usual, 
in the oesophagus. 
The structure upon the upper arch of the stomach, which, 
when magnified by a common lens, had the appearance of 
glands, is shown by Mr. Bauer to be made up of cells in the 
form of a honeycomb, the sides of which are not formed by 
doublings of the membrane, for no stretching of the cells 
alters the form of their orifices, but are regular partitions 
constructed between the cells. This honeycomb structure 
consists of cells of the greatest depth in this particular situa- 
tion, but it is met with over the whole surface of the car- 
diac portion of the stomach, only the appearance is so faint 
as to require a great magnifying power to render it visible. 
In the pyloric portion the cells, in general, have the same 
appearance, but there are small clusters, the sides of which 
