178 MALL. [VoL. XIX. 
Fic. 82b—Cut surface of the tumor, showing large masses of blood 
between the distorted chorion. Reduced one-third. 
they come in contact with fresh blood and are necrotic else- 
where. At no point does the syncytium invade the walls of 
the chorion. 
It is impossible to interpret this specimen without admitting 
that the chorion continued to grow after the ovum had col- 
lapsed. 
No. 87. 
Ovum, 24 x 16'x OQ mm-yembryo;-C.R2,74 mam. 
Dr. Cole, Peru, Iil. 
“The last period took place April 15, 1896. On May 15 
the woman had a slight flow which repeated itself every few 
days until the 27th, when the abortion took place. The day 
before the abortion the woman worked very hard.” 
The lower end of the embryo looks atrophic and on the 
opposite side of the ovum there is a vesicle 2.5 mm. in diam- 
eter. 
Both the embryo and vesicle with pieces of the adjacent 
chorion were cut into serial sections. 
The embryo proved to be a normal specimen about 21 days 
old, with normal umbilical vesicle and so on. The vesicle on 
the opposite side of the ccelom appears to be anything but an 
