Rf'- R.Im 



Fig. 21 Graphic reconstruction (dorsal view) of the gall bladder and liver ducts 

 of an embryo 28 mm. long (H.E.C. 221). X 20. For abbreviations, see figure 22. 



Fig. 22 Graphic reconstruction (dorsal view) of the gall bladder and liver 

 ducts of an embryo 41 mm. long (H.E.C. 371). X 20. D.chol., ductus choledochus; 

 D.cTjst., cystic duct; D.hep.l., left hepatic duct; D.hep.r., right hepatic duct; G.bl., 

 gall bladder; R.a.l., anterior left hepatic ramus; R.a.r., anterior right hepatic 

 ramus; R.l.m., left medial hepatic ramus; R.r.m., right medial hepatic ramus; 

 R.p.l., posterior left hepatic ramus; R.p.r., posterior right hepatic ramus. 

 , Fig. 23 Graphic reconstruction (dorsal view) of the gall bladder and liver ducts 

 of an embryo 18 cm. in length. X 10. For abbreviations, see figure 22. 



Fig. 24 Graphic reconstruction (dorsal view) of the gall bladder and liver 

 ducts of an embryo 60 mm. in length (H.E.C. 409). X 20. For abbreviations, see 

 figure 22. 



Fig. 25 Graphic reconstruction (dorsal view) of the gall bladder and liver ducts 

 of an embryo 86 mm. in length (H.E.C. 410). X 20. Only the proximal part of 

 the hepatic ducts are represented. For abbreviations, see figure 22. 



373 



