HISTOGENESIS OF THE LIVER 



275 



Fig. 6 A series of transverse sections of liver anlagen of Acanthias embryos 

 of different ages. The mesothelium is represented in solid black, the mesenchyma 

 in coarse stipple and the entodermal structures in outline; the blood-vessels are 

 omitted. A, embryo 6.4 mm. long (S.C. 19); B, embryo 9 mm. long (H.E.C. 

 1495); C, embryo 10 mm. long (C.S. 20); D, embryo 15 mm. long (H.E.C. 1494); 

 E. embryo 20.6 mm. long (H.E.C. 1494); all X 50. 



