No. 1.] ORIGIN OF HUMAN MONSTERS. 175 
As far as it is possible to determine, the sections indicate 
that the embryo, cord and yolk sac are normal. The villi of 
the chorion, however, which are well developed, have a con- 
siderable quantity of a fibrinous mass between them which is 
rich in leucocytes. The syncytium is well developed and at 
the tips of a number of villi it is decidedly necrotic. It may 
be that these changes are of sufficient importance to account 
for the abortion. 
No. 81. 
Ovum, 65 x 55 x 35 mm; embryo, C. R., 15 mm. 
Dr. Branham, Baltimore. 
“The abortion took place just three months after the begin- 
ning of the last menstrual period.” 
The unopened ovum had been placed in a large quantity 
of alcohol, and when it reached the laboratory I cut a window 
into it to allow the alcohol to enter its cavity. Within an 
embryo was found, which appears macerated and is broken 
Fic. 81a—Photograph of the whole ovum. Slightly reduced. 
in its middle. The crest of necrotic tissue on the head of the 
embryo, the stumpy leg, the distended cord and atrophic 
chorion, all indicate that it is pathological. 
Two parts of the embryo were cut into serial sections and 
different portions of the chorion were also examined. 
