302 A Study of the Structural Unit of the Liver 
stage; the processes extending into the abdominal cavity are irregular, 
to fit into the spaces that there are for them to grow into. Thus, in its 
MIGe was: 
Mie. 59. Fic. 60. 
Fies. 58, 59 and 60. Three views of a model of the liver of a human em- 
bryo, 24 mm. long (No. 10). X 8. 
growth the liver may atrophy at one portion and expand in another, the 
aberrant bile ducts marking those portions of the liver which have been 
