502 VINCENT HARRIS. 
PactntaAn Corpuscries in the PANcREAS and MESENTERIC 
Guanps of the Cat. By Vincent Harris, M.D., 
Lond., Demonstrator of Practical Physiology at St. 
Bartholomew’s Hospital. 
a. In the Pancreas.—In examining some specimens of the 
pancreas of a cat, from a part which was closely adherent to 
the duodenum, I observed a large number of Pacinian cor- 
puscles. In one small section no less than three were seen 
grouped together, with here and there a solitary one; they 
were cut in various ways by a transverse section of the tissue, 
and so evidently lay with their long axes placed in various 
directions. The largest number of the corpuscles was seen 
near the outside of the sections, in the connective-tissue cap- 
sule of the organ, but in one or two instances a solitary cor- 
puscle appeared in the midst of the gland amongst the scanty 
interlobular connective tissue. The difference in the size of 
the bodies was very marked, some being twice as large as 
others, but not any so large as those generally observed in 
the mesentery proper. 
As regards structure, they showed extremely well the 
hyaline ground membranes lined with endothelium, but 
here and there an appearance as though they were separated 
from one another by an albuminous material in addition. 
The average number of the ground membranes in a corpuscle 
was about twenty-two. 
B. In Lymphatic Glands.—In the mesenteric glands of 
a cat examined in sections, I also noticed a large number 
of Pacinian corpuscles. These again were found to be 
situated to the outside of the sections, and were evidently 
contained less in the gland itself than in the loose connective 
tissue surrounding it. They presented the structure of the 
ground membranes and of the central mass perfectly, and 
the termination of the axis cylinder, closely invested with 
large nuclei, was in most cases contained in a sheath filled 
with a brownish material, which would not stain well with 
logwood. This material was probably similar to that which 
was observed between the capsules of the corpuscles in some 
specimens of the pancreas. 
The appearance of Pacinian corpuscles in the localities 
mentioned above is most likely to be explained by the fact 
that the tissues in which they were found are closely con- 
nected with the mesentery, which in the cat is well known 
to be abundantly supplied with such nerve endings. In 
