484 
DE. HEBBEET WATNEY ON THE MINUTE 
The nuclei of the epithelial cells are seen to be divided transversely, 
obliquely, and vertically. 
Fig. 28. Oc. hi., obj. 7, x300. 
Section of one of the plicae villosae from the stomach of a dog. The animal 
was killed two hours after food. 
Ic. Lymph-corpuscles. 
Fig. 29. Camera Lucida: obj. 7, X 450 — oc. m., obj. 8. 
Epithelial cells covering one of the plicae villosae, from a section of the 
stomach of a dog. 
The mucus in the upper part of the epithelial cells is very deeply stained. 
At the base of the epithelium numerous small round or conical cells are seen. 
Fig. 30. Camera Lucida: obj. 5, X 300 — oc. ill., obj. 8. 
Epithelium covering the plicae villosae : from a section of the stomach of a 
dog. 
The stomach had been stained in gold and hardened in chromic acid. 
b. Broad cells with nuclei in a state of division. 
Fig. 31. Camera Lucida : obj. 5, x300 — oc. hi., obj. 8. 
Epithelium covering the plicae villosae : from a section of the stomach of a 
dog, showing a small bud-like group of cells. 
Fig. 32. Camera Lucida: obj. 5, x300 — oc. hi., obj. 8. 
Oblique section of epithelium covering the plicae villosae : from the stomach 
of a dog. 
b. Pale cells with spherical nuclei. 
Fig. 33. Camera Lucida: obj. 5, x 300 — oc. hi., obj. 8. 
Section of a short villus-like process : from the stomach of a dog, showing 
the “ epithelial buds.” 
The nuclei of the cells composing the bud-like groups are spherical, and 
are less stained than those of the neighbouring cells. 
Fig. 34. Camera Lucida: obj. 5, x 300 — oc. hi., obj. 8. 
Two of the villus-like processes of the pyloric end of the stomach of a frog 
(JRana esculenta). Only part of the figure is filled in. 
v. Blood-vessels at the summits of the processes. 
On the left side of the figure the great length of the epithelial cells is seen. 
Fig. 35. Camera Lucida: obj. 8, X 600 — oc. hi., obj. 11 immersion. 
Slightly oblique section of the epithelium of the ducts of the stomach-tubes : 
from the stomach of a dog. 
The reticulum is seen to surround the epithelial cells. 
Fig. 36. Camera Lucida: obj. 8, X 600 — oc. hi., obj. 11 immersion. 
Vertical section of the upper part of one of the plicae villosae, from the 
stomach of a dog. 
