312 MALL. [Vov. XIX. © 
alimentary canal are obscure and its epithelial lining is nearly 
lost. The blood-vessels are distended with blood in an ir- 
reeular fashion. The liver is necrotic and free from blood. 
The tissues of the body are all dissociated, which condition 
obscures the muscles and nerves and sharpens the outlines of 
the cartilages. The epidermis is intact. 
No. 321. 
Ovum, 40 x 40 x 20 mm.; embryo, 2 mm. 
Dr. Wentz, Hanover, Penna. 
The ovum is covered entirely with villi and contains some 
reticular and much granular magma. The whole chorion is 
lined by the amnion and the embryo is attached to it at its 
middle. Traces of the central nervous system can still be 
seen, and in front of it there is a structure which may repre- 
sent the heart encircled by a large space, the ccelom, this ex- 
Fic. 321a—Photograph of the ovum. X 2 times: 
