No. 1.] ORIGIN OF HUMAN MONSTERS. 205 
of uterine mucous membrane, showing that an extensive in- 
flammatory deposit cuts off the normal nutrition of the ovum. 
The ovum is partly filled with magma reticulé, in which 
there is imbedded an umbilical vesicle two millimeters in 
diameter attached to the remnants of an embryo, without 
myotomes. The neural canal is present and the body runs 
out into a stem, containing a tube (allantois), which does 
not attach itself to the chorion. There are also remnants of 
an amnion present. All in all, the embryo appears to be 
much like Graf Spee’s specimen, which is 1.54 mm. long. 
There is no trace of a heart, but there are numerous blood 
islands in the umbilical vesicle and there are remnants of 
plood-vessels in the chorion, showing that the two were con- 
nected at an earlier date. 
No. 307. 
Ovum, 40 mm. in diameter ; embryo, 20 mm. long. 
Dr. Coe, New York. 
The chorion and villi are imbedded in an hemorrhagic mass, 
and the latter do not appear normal; they are often surrounded 
by small. clumps of leucocytes, which invade the mesoderm 
of the villi. The embryo was said to have been a beautiful 
normal one, but it had been harshly treated and practically 
ruined before it came to me. Sections of the embryo show 
that the tissues are macerated and distorted and probably 
normal. 
No. 308. 
Fetus, C. R., 84 mm. 
Dr. Ballard, Baltimore. 
“Without any previous bleeding, on February 28, 1905, 
the fcetus as you have it was passed suddenly, accompanied by 
the usual amount of hemorrhage. Probably one-half of the 
placenta was retained, and was removed by curettement. 
Patient is regular in menstruation, and previous to miscar- 
riage menstruated November 19,:1904. She has one boy 
who will be thirteen months old May 10, 1905, and another 
