Morphology. 
The parasites were round, or oftener, slightly oval and flatte- 
ned, 1-1/2 to 2 mm. in diameter, with rather tough capsules. 
When compressed between glass slides the capside burstand the 
contents poured ont as a turbid fluid. This fluid consisted of in- 
numerable discrète mobile banana-shaped sporozoites, some of 
which moved slowlv along the projected line of their curvature. 
I^resh and stained specimens of sporozoites appeared to show 
iipon examination two kinds : slender and stubby : 
(iiemsa Fresh Saline 
Leng’th of sporozoite . 10-12 ijl 8 u 10-12 p 
^^’idth of sporozoite . 4P 30 2 p 
In the saline suspension, the slenderer sporozoites, measuring 
2 P X 10 to 12 P, are more refractile than the others. In stained 
préparations no flagella were demonstrable, and, indeed, the mo- 
t'on of the sporozoite is not like that produced by flagella. 
jMiCROSCOPIC EXAMIXATION of TISSEE. 
Omenttim: d'here is an oval parasite within a homogeneous 
capside inbedded in a fibrotis envelope, rich in small, round cells. 
Pericardium : There are several oval parasites in the viscéral 
jjericardiurn with capsules staining homogeneotishp distended by 
sporozoites, apparentlv not arranged in chambers. 
Lungs : Several parasites, with hvaline non-striated capsules; 
they are sidîpleural and surrounded by two or three layers of cu- 
boidal endothélial cells. 
(Tsophagus : Imbedded in the smooth muscle wall is a para¬ 
site with a non-striated hyaline capsule 16 p in thickness, 
and surrounded by a few layers of connectiye tissue cells. Just 
outside of these is the smooth muscle wall. Ail the sporozoites ap- 
pear to be in the same stage of deyelopment. 
Striated Muscle, Leg : Seyeral parasites are seen with pale hya¬ 
line capsules 36 p in thickness, surrounded by two or three 
layers of connectiye tissue cells, fibrotis in character, and this is 
in turn surrounded by normal striated muscle, in which there are 
no eyidences of younger parasites. 
Tongue: The tongue contains one oyal parasite, similar to that 
seen in other specimens of striated muscle. 
Stib-Maxillary Gland: This gland contained a parasite with a 
