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DR. LEE ON THE STRUCTURE OF THE HUMAN PLACENTA. 
Explanation of the Plates. 
Plate I. 
Fig. 1 . — Represents the openings in the inner membrane of the uterus, where 
the placenta had adhered. 
Fig. 2. — A view of the uterine surface of the placenta, covered by the mem- 
brana decidua. 
Plate II. 
A section of the gravid uterus, placenta, and membranes. 
a. Uterine sinuses injected. 
h. The membrana decidua passing between the uterus and placenta. 
c. The chorion and amnion passing over the foetal surface of the placenta. 
d. The vessels which compose the placenta. 
e. The umbilical chord. 
