No. 1] ORIGIN OF HUMAN MONSTERS. 201 
No. 136. 
Ovum, 14 x 6 mm.; embryo, C. R., 5 mm. 
Dr. Campbell, Halifax, N. S. 
“Beginning of last period August 21, 1898. Abortion Oc- 
tober 16. Entire ovum was hardened in 95 per cent alcohol.” 
The ovum is covered with rudimentary villi, and when 
opened was found to be completely filled with magma re- 
ticulé. Shining through this mass can be seen the embryo, 
curled up, with extremities, myotomes, heart and umbilical 
vesicle visible. This remarkable specimen is a four-weeks 
embryo within a two-weeks ovum. The entire ovum with the 
embryo was cut into serial sections. 
Fic. 136a. Fic. 136b. 
Fic. 136a.—Photograph of the ovum. Natural size. 
Fic. 136b—lInterior of the ovum, showing faint outline of the embryo 
buried in magma. 
The villi of the chorion are atrophic and fibrous, with great 
buds of syncytium hanging to them as well as to the main 
wall of the chorion. Between the villi there is a small amount 
of mucus or fibrin, within which there are numerous leuco- 
cytes. Amnion, umbilical vesicle and embryo are apparently 
normal and of the four-weeks stage. The embryo is twisted 
on its long axis at about 90 degrees. The organs are normal. 
The peritoneal cavity is normal in shape and filled with blood, 
appearing as a fresh hemorrhage; the pericardial cavity is 
empty. 
No. 137. 
Ovum, 65 x 50 x 30 mm; embryo, C. R., 16 mm. 
Dr. Watson, Baltimore. 
“Last period commenced September 26, 1808. Abortion, 
December 21.” 
