1875. ] PROF, W. H. FLOWER ON THE MUSK-DEER. 169 
into an upper and lower cavity ; or*perhaps it can be more correctly 
described as an elongated conical pouch, folded sharply on itself in a 
sigmoid manner, with constrictions projecting into the interior, at the 
inner bends of the folds. The lowest constriction, situated on the left 
border of the organ, is deep, and the projecting pouches above and 
below it very distinct; and their apices, having different directions, 
cross each other, the upper one projecting forwards, and the lower 
or larger one (the fundus or distal end of the whole cavity, figs. 6 
& 7, a) turning backwards. 
Posterior or dorsal aspect of the stomach, one fourth natural size. 
O, esophagus; Ru, rumen; 4, its apex; Re, reticulum’; P, psalterium ; 
A, abomasus; p, pylorus. 
The villi lining the interior of the rumen are slender and cylin- 
drical and very slightly clavate. They nowhere exceed 015 in 
length, and are largest at the anterior and lower part of the upper 
pouch. As usual, they are exceedingly short, though not absent, on 
the edges of the projecting ridges, and over certain points become 
very fine and sparsely scattered, as on the posterior surface, a little 
way above and below the constriction, in two rather distinct patches 
at each place, and more especially at the apex of the lowest or ter- 
minal pouch. On the middle of the anterior surface, immediately 
above the constricting band, where this is subsiding at its left ex- 
tremity, is a small oval orifice, ;4 inch long, placed transversely, leading 
into a little (apparently) glandular pouch in the walls of the stomach. 
The diminished size and concentric arrangement of the villi imme- 
diately around this opening evidently show that it is a natural struc- 
ture. 
In the reticulum (Re), the ridges enclosing the polygonal spaces 
