TASMANIAN DEVI L. 



forward than the middle of the bladder. The posterior 

 1 5th is closely bound to the liver substance, so that it 

 can only be regarded as invested by peritoneum on the 

 under surface and sides. The (Jail Bladder measures 

 3.5 cm. dorso-ventrally, and laterally, when collapsed, 2 

 cm. 



Cystic Duct. — This measures about 2 cm. in length, 

 and runs in a depression or channel between the left part 

 ot the cystic on one side, and the fissured and lobulated 

 inner part of the right division on" the other. It is joined 

 by four main hepatic ducts from the liver, and becomes 

 the common bile duct. The portal interval, where this 

 union takes place, is situated between the ventro-inner 

 projection of the left lat. lobe, the ventro-inner part of 

 the right lat. lobe, and the dorso-inner parts of the right 

 and left cystic lobes. To see the junction of the ducts it 

 may be necessary to detach portions of the right or left 

 lobes. 



Hepatic Ducts.— On the left side we notice a smaller 

 A'entral branch from the left mesial lobe, and a larger 

 dorsal branch from the left lat. lobe. On the right side 

 we note a small branch vent rally from the right mesial, 

 or from the intermediate mesial or cystic and ventral part 

 of the right mesial, and a dorsal branch from the right 

 lateral and caudate lobes, which receives, near its termina- 

 tion, a branch from the lower part of the right cystic, or 

 right part of the mesial. 



The Common Bile Duct, with the portal vein dorsally, 

 and the artery dextral, passes down on the right of the 

 lesser omentum, lying at first in the interval between the 

 spigelian and caudate lobes (the inf. v. cava lying dor- 

 sally behind the inner part of the caudate), and, sur- 



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