The Digestive System 165 
under high magnification there is no noticeable 
difference in the glands at the two seasons. 
Rathke has given the name of ‘‘Gescmack- 
warzchen”’ to the conical projections found on 
the dorsum of the crocodilian tongue; they are 
distinguished by their softness and thinner epi- 
thelial covering from the cones that, in many of 
these animals, bear the openings of the mucous 
glands. 
These taste papilla generally fee the form of a 
truncated cone and often are surrounded by a shal- 
low circular pit, outside of which, in turn, is some- 
times a small low wall. They are distributed over 
the entire dorsum of the tongue, usually at con- 
siderable distance from each other in comparison 
to the size of the tongue, and are not so numerous 
as the taste papille of the Mammalia. Rathke 
found their absolute number greatest in A. 
luctus. 
Rathke mentions other larger and harder pro- 
jections on the tongue of certain Crocodilia which, 
though not perforated by a mucous duct, he 
thinks are of questionable relation to the sense 
papille. They usually have more the form of a 
flattened than of a truncated cone, and are very 
numerous in some species. 
The Roof of the Mouth. Inthe paper mentioned 
above the author notes that the papillze on the roof 
of the mouth are evenly distributed and are more 
distinct than those of the dorsum of the tongue. 
