No. 1.] ORIGIN OF HUMAN MONSTERS. 145 
Fic. 11a—Photograph of the entire ovum. Natural size. 
four to five days. She gave birth to a child September 19, 
1892, and had the first recurrence of menstruation December 
19. The second period followed on January 25, and was very 
profuse; it lasted until February 1. The next period should 
have begun about February 22, but on account of its lapsing 
Fic. 11b—Diagrammatic section of half the ovum with the embryonic 
mass attached. XX 10 times. The villi are drawing only upon the 
upper quarter of the chorion. Ec, ectoderm; en, entoderm; uv, um- 
bilical vesicle; mes, mesodern; coe, ccelom; all, allantois; a, amnion. 
the patient concluded that she was pregnant, and called at my 
office a few days later. I did not examine her, but asked her 
to remain quiet and await developments, as I thought possibly 
that she might be pregnant. On the evening of March 1 she 
fell and sprained herself, and during the same night had a 
