172 MALL. [Vor. XIX. 
is increased in quantity and is filled with wandering cells. At 
the base of the vesicle there are several blood spaces filled 
with blood. 
No. 79. 
Ovum, 50 x 50 x 50 mm. >embrye, (Cri, 42 smite 
Dr. Briggs, BlackvillesseG: 
Dr. Briggs writes that the abortion took place 91 days after 
the beginning of the last menstrual period. 
The specimen came into my hands well hardened in strong 
alcohol with all of the membranes intact. When opened it 
was found that the inner walls of the amnion and the embryo 
were entirely covered with a layer of firmly coagulated gran- 
ular substance or granular magma. 
Fic. 79—Photograph of ovum cut open, showing the embryo encrusted 
in granular magma. Natural size. 
The chorion is very hemorrhagic and thick on one side, 
while on the other it is very thin. The sections show appar- 
ently normal structures in the thick portion, while in the thin 
portion there is an extensive leucocytic infiltration. At this 
latter point the walls of the chorion are markedly changed, 
being invaded by the syncytium as well as by leucocytes. 
Serial sections of the embryo show that it must have been 
strangulated before the abortion took place. The central 
