264 MALL. [Vor. XIX. 
with blood and the tissues of the body are somewhat infil- 
trated with round cells. The outlines of the organs are slightly 
obscured, but some of the tissues of the body are sharpened 
by the process of maceration, which does not seem to have 
been of long duration. 
Soe 
Fic. 270c.—Sagittal section of the embryo. X 7% times. 
No. 275. 
Ovum, 40 x 30 x 25 mm.; embryo straightened and about 
three weeks old. 
Dr. Tobie, Portland, Me. 
The chorion: of this specimen, thought to be two months 
old, is thin and covered with some villi which are imbedded 
in much blood. In structure it is fibrous, with a diminished 
amount of syncytium upon it, and contains no blood-vessels. 
Within there is a cavity, the amniotic, filled with a clear 
fluid, into which the deformed embryo projects. The exo- 
