318 MALL. (Vor. XIX. 
The epidermis covers the embryo only in part; a shell of 
granular magma covers the rest of the body. ‘The tissues of 
the body are greatly dissociated and macerated, which has 
caused almost complete obliteration of the outlines of the 
epithelial lining of the alimentary canal. The central nervous 
system is nearly solid and the large blood-vessels are gorged 
with blood. The liver is necrotic. The mesodermal tissues 
are obscured, with the exception of the cartilages, whose out- 
lines are sharpened. 
No. 328. 
Embryo, 44% mm. long. 
Dr. Pohlman, Bloomington, Ind: 
The chorion extends into irregular fibrous villi, which are 
covered with a necrotic decidua infiltrated more or less with 
leucocytes. The main wall of the chorion is about normal 
in structure and contains numerous blood-vessels. Within 
the amnion nearly reaches the chorion; the degenerated um- 
bilical cord is attached to the amnion, but not to the chorion. 
The umbilical vesicle is well imbedded in magma, is very 
rich in blood-vessels and on its outside has many papilliform 
Fic. 328a. 
Embryo attached to the chorion. XX 4 times. 
processes, some of which seem to blend with the chorion. In 
fact, it appears as if the blood-vessels of the umbilical vesicle 
passed directly over into those of the chorion. 
The embryo is somewhat deformed, and it is difficult to 
follow the outlines of some ot its ;aiscera 1 he veeniral 
