224 NORMAL HISTOLOGY AND ORGANOGRAPHY. 



or irregularly polyhedral in shape, about 2 mm. in 

 length and i mm. in breadth. Their arrangement 

 is quite irregular except just beneath the capsule 

 where they usually lie with their apices toward the 

 surface. Each lobule has a connective-tissue in- 

 vestment in which the finer branches of the portal 



Inlerlnbuhr 



vessel. 



Fig. 169. Injected blood-vessels in liver lobule of rabbit (Bohm and 

 Davidoff). 



canal ramify. This investment is particularly dense 

 in the pig, which renders the organ in this animal 

 very fibrous and tough, quite unfit for the market. 

 In certain chronic liver diseases the same condition 

 obtains, when the organ is spoken of as the "hob- 

 nailed" or "nutmeg" liver. 



