No. 1.] ORIGIN OF HUMAN MONSTERS. 223 
The mesoderm of the cord, chorion and villi is fibrous, 
having also an excess of spindle-shaped cells. The blood- 
vessels are all very large, those of the villi as well as most of 
those of the main wall being gorged with blood. The large 
blood-vessels of the cord are empty. Within the cavity of 
the amnion scattered throughout the magma there are numer- 
ous flakes of tissue of the embryo and a great many free cells. 
No. 200. 
Ovum, 35 x 25 x 20 mm.; embryo, C. R., 14 mm. 
Professor Brodel, Baltimore. 
The central nervous system is dissociated and macerated 
very much, the form of the brain and spinal cord being lost 
entirely. The organs are all deformed, the liver in addition 
being necrotic, as it does not stain at all. There is ulceration 
of the front of the head, but over the rest of it, in spite of the 
extensive internal change, the epidermis is intact. 
The walls of the umbilical vesicle are broken down entirely 
and its lumen is filled with a mass of necrotic cells. The 
amnion, chorion, and villi are more fibrous than normal. 
Fic. 200.—Broken embryo within piece of the chorion, showing stumpy 
arm. Natural size. 
No. 201. 
Ovum, 80 x 60 x 50 mm.; embryo, C. R., 20 mm. 
Professor Brodel, Baltimore. 
The ovum was received without villi and upon opening it 
it was found filled with a fluid which had hardened into a 
