166 MALL. [Von. XIX. 
No. 60. 
Embryo, C. R., 8 mm. 
Dr. Dobbin, Baltimore. 
The body and extremities of the embryo appear normal in 
form. The tissues are considerably macerated and may be 
normal. The spinal cord is solid. There are large islands of 
blood cells in the liver. 
No. 69. 
Ovum, 70'X 40° x 20) mums embiyonCe he 13: 
Dr. Chabot, Baltimore. 
The chorion is smooth, not being covered with villi. The 
head of the embryo is atrophic and club-shaped and the body 
is fairly plump. The arms are well developed, of the five- 
weeks stage, and appear normal. 
The central nervous system is distended and the brain is 
macerated. The outline of the organs and of the peritoneal 
Ftc. 69.—Photograph of the embryo attached to the chorion. Natural 
size. 
cavity is not distinct, and the entire body is filled with migrat- 
ing cells. The main bundles of nerves are filled with spindle- 
shaped cells, making them look like the nerves of amphibian 
embryos. The epidermis is hypertrophied and at many points 
forms papilla. The embryo end of the umbilical cord is 
atrophic, invaded by migrating cells, and its blood-vessels are 
greatly distended. The whole chorion and part of the cord 
have undergone fibrous degeneration. 
