KOALA. 



is simplified by a description of the right and left edges. 

 The right margin may be devoid of Assuring — we may see 

 one well defined fissure practically separating this part 

 into two divisions, or we may see a series of small parallel 

 fissures in the lower half separating off small lobules. 

 Along the left, or gall bladder edge, Assuring is always 

 present. The fissures vary from four to six, and usually 

 three to five lobules are present, forming the right boun- 

 dary of the gall bladder and the cystic duct. Dorso-internal 

 it also forms part of the boundary of the portal interval. 

 Tims on its inner side, ventrally, it is separated from the 

 middle cystic by the cleft for the gall bladder and by the 

 proximal part of the depressed groove for the cystic duct, 

 and from the left cystic by the dorsal part of the depressed 

 groove for the cystic duct. Towards its outer or right 

 margin is a groove for the proximal colon. 



Kiy lit Lateral Lobe. — This is characterized in all 

 cases by its Assuring and lobulation. It is prolongated to 

 a somewhat pointed extremity, and is hollowed below for 

 the reception of the kidney. Like the right cystic, the 

 main Assuring and lobulation are on the inner or left 

 margin, and the right outer margin may present fissures, 

 or be devoid. I have counted no fewer than eight lobules 

 on the inner side, and of the lobules two are well defined. 

 The upper of these two forms part of the boundary of the 

 portal fissure, and the lower forms a somewhat mobile 

 projection on the mesial part of the surface, and is fcta 

 caudate lobe. The caudate lobe takes part below in the 

 formation of the concavity for the reception of the kidney 

 and is prolonged obliquely inward as the somewhat fiat- 

 tenecl small Spigelian lobe. Between the two ventrally is 

 a groove for the passage of portal vein, artery, and duct, 

 and dorsally is the inf. v. cava, the hepatic relationship of 

 which is not seen on this aspect of the liver. The Spigelian 

 lobe, which measures 2.5 cm. laterally and 1.5 cm. greatest 



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