322 Sir Everard Home on 
that belonging to the little finger is the broadest, so that the 
thumb (if the term may be used) is in the situation commonly 
occupied by the little finger. 
EXPLANATION OF THE PLATES. 
Plate XXV. 
The external appearance of a young dugong, upon a scale 
of two inches to a foot. 
Plate XXVI. 
The stomach distended, to show the prominent part of the 
cardiac portion containing the gastric glands, the contrac- 
tion between the cardiac and pyloric portion, and the two 
caeca that communicate with the pyloric portion ; the thick- 
ening at the pylorus, and the termination of the ducts of the 
liver in the duodenum; on a scale of half an inch to one 
inch. 
Plate XXVII. 
Consists of three figures. 
Fig. 1. The gastric glands in one mass, and the oesophageal 
glands, with the orifices exposed ; of the natural size. 
Fig. 2. The tongue in situ, only loose for half an inch at 
the point ; two nipple like processes at the root ; the papillae 
at the tip for the sense of taste ; natural size. 
Fig. 3. The caecum ; on a scale of half an inch to one 
inch. 
Plate XXVIII. 
The heart, with the aorta and pulmonary artery ; of the 
natural size ; from the dugong, eight feet long. The great 
peculiarity of the ventricles being separate, is distinctly 
shown. 
