348 MALL. [Vor. XIX. 
and is attached to the end of a very large umbilical cord. 
Sections show that the spinal cord is absent, but there is a 
solidified brain which is more or less infiltrated with round 
cells at its periphery. The same is the case with the eyes. 
The mouth is closed by the tongue, which has become ad- 
herent to the lips. The nodules in front of the body are 
composed of necrotic epithelial cells. 
Some of the tissues of the body are necrotic, but most of 
them are infiltrated with round cells, and those of the head 
are quite fibrous in character. 
The walls of the alimentary canal and the lungs are also 
pretty well filled with irregular patches of round cells. Espe- 
cially well marked is this change in the region of tendons 
and perichondrium, showing that there is an irregular growth 
of the mesodermal tissues. The clavicle, maxilla and mandible 
are well ossified, which should not be the case in so small an 
embryo. 
No. 366. 
Embryo, 9 mm. 
Professor Pohlman, Bloomington, Ind. 
Sections of the chorion, which is fleshy in appearance, show 
that its main wall is very thin and that it is lined with the 
amnion. The villi, few in number, are fibrous or hyaline, are 
covered with some syncytium, and the spaces between them 
are filled with blood. Some of the villi adhere by means of 
the syncytium to the decidua, which is fibrous and necrotic. 
There is no leucocytic infiltration of the chorion nor the 
decidua. 
The embryo is pretty well infiltrated with round cells and 
the tissues are dissociated. The tissttes are well preserved 
and appear to have been very much alive. There is a con- 
siderable quantity of blood within the cavity of the heart and 
in the blood-vessels. The central nervous system is disso- 
ciated. The lower jaw is large and is adherent to the head 
above and to the trunk below. The arms and legs are 
atrophic. 
