DR. J. MURIE ON THE ANATOMY OF THE SEA-LION. 565 
(No. 1) of considerable calibre, and 2°3 inches long, emerges from the innermost pro 
tuberant angle of the sixth lobe, and passes towards the right side, in what represents 
the transverse fissure of human anatomy. A very short, narrow branch (2), 0°3 inch in 
length comes from the diminutive and almost free lobule lying at the root of the 
cystic lobe, and joins the above-mentioned duct. These continue together about 0:2 
inch, when a third duct pours its contents into the above conjoined one. ‘This third 
branch (3) issues from the sinistral portion of the cystic lobe, isan inch long, and of equal 
diameter to that already spoken of as coming from the left lobe. A fourth adjunct 
carries the secreted bile from the irregularly shaped, nearly free lobule lying upon the 
immense vena cava. This branch (4) rolls round the hepatic artery, and crosses it 
from the left towards the right, terminating in the common tube formed by the three 
ducts already described, and about half an inch from them. At about the same distance 
further on a fifth branch (5), that sent off by the right moiety or lobule of the cleft cystic 
lobe, adds its contents to the united main trunk. This channel veers to the right and 
passes underneath the cystic duct, but without here joining it. 1-8 inch from where 
it received its last or fifth branch, it unites at a wide angle with a single capacious 
branch (6) coming from the right. This sixth division is the product of two branches 
—one, the wider, issuing from the right lobe, and the other the narrower, from the 
adjoining lobule. After the junction of the large trunk from the right side with that 
from the left, the single wide hepatic duct (hd), still keeping to the right of the cystic 
duct, runs parallel with it for half an inch, then joins to form the ductus communis 
choledochus (dch). 
The gall-bladder is an elongated, slender-necked, pyriform sac. When distended it is 
3°8 inches long and 1-8 inch in diameter at widest. It lies in the deep cleft or fissure 
separating the cystic lobe into a right and a left division. A ligament passing across 
the gall-bladder, about its middle, connects and binds it with the third and fourth 
hepatic lobules. The cystic duct itself is 3:2 inches long, and the ductus communis 
choledochus 2°3 inches. This last, the common bile-duct, externally appears to terminate 
in the intestine on its upper surface, about two and a half inches distant from the 
pyloric orifice. There, however, it only pierces the outer fibro-serous wall, but does 
not penetrate the mucous coat for two inches further on, where it opens in a semi- 
lunar slit-shaped manner. The reservoir, or expansion, is increased by an additional 
cul-de-sac extending backwards underneath the channel of ingress for almost half an 
inch. 
The broad ligament, or suspensory peritoneal fold, as it proceeds from the diaphragm 
towards the liver, is attached to the immensely distended vena cava of the left side ; 
it continues towards the incision dividing the third from the fourth lobe. The round 
ligament, as usual situated at the anterior margin of the broad ligament, enters what 
may represent the longitudinal fissure, namely that to the left of the cystic lobe, or cleft 
between the third and fourth lobes, where it joins the venacava. In the present instance 
VOL. VIII.—PART IX. June, 1874. 41 
