418 MINOT. [ Vox. If 
scribed by Reichert in the uterus of two weeks, studied by him, 
which have been figured by Coste in slightly older specimens, 
and found by Turner also, 146, 540. 
The three illustrations given herewith are all from sections 
through what I suppose to be the placental region. 
There is an upper compact layer, Cut 29, D’, and a lower 
cavernous layer, D"; the caverns, being gland cavities, which 
appear as rounded areolz lined with epithelium, are filled with 
broken-down epithelial cells. The drawing, reproduced in Cut 
29, was obtained by drawing the outlines very carefully, stip- 
pling the areas occupied by the connective tissue, representing 
the blood-vessels by double outlines, and omitting the glandular 
ys Ail Oe ppm 
coagl. 
Be eae ta 
Cut 30. — Uterus one month pregnant; portion of the compact layer of the de- 
cidua seen in vertical section; coag/, coagulum upon the surface; d, a’, decidual 
cells. XX 445 diams. 
epithelium altogether. It will be noticed that about three- 
fourths of the diameter of the mucosa is occupied by the 
cavernous layer, D". 
The upper or compact layer is shown in Cut 30. The surface 
