of the Anatomy of the Sea Otter. 391 
The mesentery is thin, and has a great many blood-vessels 
which are accompanied with fat. There are no lymphatic 
glands upon the general membrane, but a cluster of very large 
ones close to the root of the mesentery. The lacteals appear 
a little larger than in the human subject, but the circumstance 
of the animal having been two years in spirits, was very un- 
favourable for their examination. 
The omentum is a thin reticular membranous double bag, 
covering the whole of the intestines ; it is attached anteriorly 
to the great curvature of the stomach, but not to the duode- 
num ; posteriorly to the loins. 
The liver is made up of five lobes, besides the lobulus Spi- 
gellii ; three on the right of the falciform ligament, two on 
the left. 
The gall-bladder is found in the usual situation, is bent in the 
middle upon itself, and is 6 inches long. The cystic and hepatic 
ducts unite at the external surface of the duodenum, form- 
ing a common canal, or ductus communis cholidochus, about 
an inch and half long, of an oval shape, with an irregularly 
rugous internal surface, placed between the muscular coat and 
the internal membrane of the intestine ; it opens into the 
duodenum by a projecting orifice 2^ inches from the pylorus. 
The vena portarum is very large, and the passage behind 
the ducts of the liver into the cavity of the little epiploon is 
also large. 
The pancreas is situated across the spine behind the sto- 
mach, it is not confined within the usual limits, but extends 
along the posterior membrane of the omentum. It is subdi- 
vided into a number of small parts, of an oval shape, all at a 
certain distance from each other, united by blood-vessels re- 
mdccxcvi. 3E 
