278 MALL. [Vor. XIX. 
No. 286. 
Chorion, 100 x 50 x 40 mm. 
Dr. Girdwood, Baltimore. 
This remarkable specimen must have been dead in the 
uterus for about five months, the last period having taken 
lic. 286a—Photograph of the entire specimen. Natural size. 
place during the latter part of May and the abortion on the 
4th of the following January. 
The chorion thickens as it passes into the large fleshy pla- 
centa on one side and is very thin on the other. The thin 
