458 MINOT. 
EXPLANATION OF PLATE XXVII. 
Fic. 5. Portion of the ob-placenta of Fig. 2 ( X 175 diams.), to show the degen- 
erated epithelium, 4.e/, and the saucer-shaped glands, <7, 27’. 
Fic. 6. Rabbit’s uterus of eleven days; portion of the ob-placenta to show the 
degenerated epithelium, /.ef, and the regenerated glands, ¢/ ( X 175 diams.). 
Fic. 7. Portion of the placenta of Fig. 2 ( X 175 diams.), to show the degenera- 
tion of the uterine tissue and the relations of the foetal ectoderm to the piacental 
surface. 
Fic. 10. Rabbit’s uterus of thirteen days; portion of the ob-placenta (x 175 
diams.), to show the regenerated glands. 
Fic. 11. Portions of the epithelium of the periplacenta at thirteen days. A, ver- 
tical section (X 175 diams.). B, surface view (X 175 diams.). C, single cell 
( X 445 diams.). 
