396 
DR. LIONEL BEALE ON THE 
Fig. 7* Interlobular duct with parietal sacculi of the pig, injected with Prussian 
blue. c. Branch of artery. 
Fig. 8. One of the sacculi marked a, fig. 10, magnified 215 diameters, a. Fibrous 
coat of duct. h. Cavity of sacculus filled with injection, c. Epithelium. 
Fig. 9. A very small lobule of the pig’s liver, showing the ducts dividing into branches 
upon the surface of the capsule. 
PLATE XIV. 
Fig. 10. Transverse section of human liver, showing the general ari angement of the 
ducts in the interlobular fissures, a. Branches of portal vein injected with 
white lead. h. Small branches of intralobular vein, injected with lake. 
c. Capillaries of lobule, represented only in a few situations, d. Branches 
of duct injected with Prussian blue passing towards the lobules, and giving 
oflT few branches in their course. The imperfect manner in which the 
lohules are mapped out in the human subject and in most other mamma- 
lian livers, is shown in this figure. 
Fig. 11. Interlobular duct of the rabbit, injected with Prussian blue. a. Trunk of 
duct, b. Small branches passing off to cell-containing network, and 
anastomosing with each other. c. Commencement of cell-containing 
network at the margin of the lobule, showing its continuity with the finest 
ducts. In this specimen the liver-cells were much disintegrated from 
disease. The tubes of the cell-containing network were occupied with 
granular matter in which very few liver-cells could be detected. The 
injection consequently penetrated very readily for a considerable distance, 
as shown by the tinting. 
Fig. 12. Interlobular duct, parietal sacculi, and branches of communication {a) from 
the human foetus. At h small branches of the ducts are seen passing off 
to, and becoming continuous with, the cell-containing network of the 
lobule. Injected with Prussian blue. 
Fig. 13. A corresponding preparation from the foetal calf near the full time. The 
sacculi are large and distinct. In this figure the outline of the portal vein, 
which was injected with plain size, is shown, a. Branches of duct passing 
to cell-containing network of lobule. 
Fig. 14. Interlobular ducts and smaller branehes from the human foetus, showing 
their anastomoses, and, at a, their continuity with the cell-containing 
network at the margin of the lobule, b. Section of a small branch of the 
portal vein with ducts around it, which have been cut across in making 
the section. In this preparation the ducts were injected with carmine. 
Fig. 15. A small portal canal from the liver of the seal. The portal vein injected 
with plain size, and the duct with Prussian blue. a. Artery, b. Duct. 
