312 Dr Duckworth, The histology of the early placenta, tkc. 
Fig. 10. a. 
h. 
c. 
d. 
e. 
lumen of uterine gland. 
degenerating gland-epithelium. 
mass of tissue regarded as embryonic (syncytial). 
mass of red blood-cells in lumen of gland. 
red blood-cell. 
Fig. 11. 
a. lumen of uterine gland. 
b. degenerating gland-epithelium. 
c. mass of tissue regarded as embryonic (syncytial). 
d. mass of red blood-cells in lumen of gland. 
e. red blood-cell. 
f leucocyte with curious nucleus (“tetrad”). 
Fig. 12. Transverse section of an embryonic villus from Section 115 
(magnification &c. as in Fig. 7). The villus projects into an inter- 
villous space. Centrally the cells are provided with cell-walls and 
peripherally is a protoplasmic covering with rare nuclei. The 
peripheral tissue is stained more deeply than the central cells, and 
is regarded as representing the syncytial layer (Voigt’s Deck- 
schicht) while the central cells correspond to those of Langhans’ 
layer (Voigt’s Grundschicht). 
a. inner cell of villus. 
b outer covering of villus with nuclei. 
c. red blood-cell in intervillous space. 
