DE. J. MITEIE 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 thu-d duct pours its contents into the above conjoined one. This third 

 branch (3) issues from the sinistral portion of the cystic lobe, is an 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 inght, 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 I'S 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 vena cava. In the present instance 



VOL. VIII. — PART ij. June, 1874t. 4i 



