No. 1.] ORIGIN OF HUMAN MONSTERS. 195 
No. 133. 
Ovum, 32 mm. in diameter. 
Dr. J. M. Hundley, Baltimore. 
“Last period began September 15, 1898, and continued 
eight days; bloody discharge began November 11th and abor- 
tion occurred on the 19th. Both parents perfectly healthy. 
Hardened in 75 per cent alcohol.” 
When the specimen came into my hands I believed it to be 
normal, but after cutting out a piece of chorion I found the 
ccelom completely filled with a dense mass of magma reticulé. 
In taking off the piece of chorion I cut the attachment of the 
umbilical cord and thus located the embryo. The mass of 
magma and a portion of the chorion encircling the embryo 
were removed and cut into serial sections. 
Fic. 133—Ovum with piece of chorion removed, showing dense magma 
within. Natural size. 
The villi of the chorion are fibrous but normal in shape, 
with but litle syncytium at their tips. The syncytium imme- 
diately over the walls of the chorion is greatly increased in 
quantity. The ccelom is filled with magma and migrating 
cells. The amnion is complete. Umbilical vesicle is filled 
with desquamated entoderm cells. The embryo is distorted 
and cramped; epidermis is exfoliated at the points where the 
amnion contains masses of migrating cells; nervous system 
distended and dissociated ; organs and peritoneal cavity fairly 
well outlined ; liver filled with blood which forms large islands 
at points; front end of head greatly distorted, eye macerated 
and whole head gorged with round cells. 
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