STUDIES IN THE PERITONEUM. 
535 
UNIVERSITY OF CALIFORNIA—VETERINARY DEPARTMENT. 
Fundamental Faculty. —W. F. Egan, M.R.C.V.S., Professor of Principles and 
Practice of Veterinary Surgery and Equine Medicine. F. A. Nief, B.Sc., D.V.S., 
Professor of Comparative Anatomy. A. Auchie Cunningham, F.C.S., F.I. Inst., 
etc., Professor of Chemistry, Materia Medica and Toxicology. S. J. Fraser, B.A., 
M.D., Professor of Physiology and Histology. Frank W. Skaife, D.V.S., M.R.C. 
V.S., Professor of Helminthology, Canine Medicine and Surgery and Dermatology. 
K. O. Steers, V.S., Professor of Therapeutics and Botany. Thomas Maclay, M.R. 
C.V.S., Professor of Bovine Medicine and Obstetrics, and Veterinary Sanitary 
Science. Henry B. A. Kugeler, M.D., Lecturer on Pathology and Bacteriology. 
Fees. —Tuition, $iooeach year; matriculation, paid once only, $5 ; demonstra¬ 
tor of anatomy’s ticket, 810; pathological anatomy, $10; breakage fund, $5; 
diploma fee, $25. 
Address F. W. Skaife, D.V.S., M.R.C.V.S., Dean, 18 Cedar Ave. 
These are both three-year schools. 
ORIGINAL ARTICLES. 
STUDIES IN THE PERITONEUM. 
THE PERITONEUM OF THE GRAY (TREE) SQUIRREL (RODENTIA). 
By Byron Robinson, Professor of Gynaecology in Chicago Post-Graduate School. 
A comprehensive view of the peritoneum can only be at¬ 
tained by pursuing embryologic and comparative work as well 
as studying the adult structure of humans. To the order of 
rodentia belong the rabbit, squirrel, gopher, rat, beaver, etc. 
I carefully dissected, of this order, the rabbit, squirrel and 
gopher. They differ but little. The squirrel has two colonic 
loops in the descending colon, the gopher one, and the rabbit 
has no double colon, i.e., loop, in the ascending colon. The 
chief difference found in the rodents from that of man lies in 
the relation of the transverse colon and the great omentum. 
Man has a ligamentum phrenico-colicum ; the rodents do not. 
The examination of the squirrel in question showed a body 
twelve inches long. The omentum reached half way from 
stomach to pelvis. It does not cover cascum, and is filled 
with waxy white fat; it is ample to reach pelvis by stretching 
out. Its origin from the greater curvature of the stomach 
follows the much twisted stomach around the duodenum, to 
