RHINOSPORIDIUM KINEALYI. ok 
EXPLANATION OF PLATES 380 AND 31. 
All the figures of Plate 31 were outlined with the camera lucida (Zeiss), 
using compensating oculars 4 or 18 (Zeiss) and objective 3 mm. homog. 
immersion (Zeiss). 
SIGNIFICANCE OF THE LETTERING. 
Gran. pplm. Granular protoplasm. Pplm. Protoplasm. Other references 
are given in full. 
PLATE 30. 
Fic. 1.—Photo-micrograph of cysts and surrounding tissue. X 50 approx. 
PLATE 31. 
Fies. 2 to 6 indicate the life-history of the Sporozodn, so far as known at 
present. 
Fic. 2.—Small cyst, with thin wall and granular protoplasmic contents. 
From a preparation stained with picrocarmine. x 480. 
Fic. 3.—Small cyst, stained with Delafield’s hematoxylin, showing shrink- 
age and wrinkling of the cyst-wall. x 480. 
Fic. 4.—Small cyst, amceboid in shape, with granular protoplasmic contents. 
From a preparation stained with picrocarmine. x 480. 
Fig. 5.—Cyst containing closely-packed spherical uninucleate masses of 
protoplasm (pansporoblasts), and undifferentiated peripheral protoplasmic 
layer. From a preparation stained with Heidenhain’s iron-hematoxylin. 
x 480. 
Fic. 6.—A fully developed cyst, with a portion only of its contents drawn, 
showing the three zones of granular bodies (pansporoblasts), which zones, 
however, show a gradual transition from the peripheral, through the inter- 
mediate to the fully-formed or central zone. As seen in preparations stained 
with iron-hematoxylin, Delafield’s hematoxylin, or picrocarmine. In a 
picrocarmine preparation the fully-formed spore-morule take on a reddish 
tint. x 480. 
The spore-morule indicated with dark contents in Figs. 6, 7, and 9 were 
stained red with picro-carmine, the others staining yellow. 
Fic. 7.—Portion of fully-developed cyst, such as is indicated in Fig. 6, 
more highly magnified. This shows the formation of spores in the pansporo- 
blasts, so far as can be ascertained in the relatively thick sections at our 
disposal. From preparations stained with iron-hematoxylin and picrocar- 
mine. X 2000. 
Fic. §.—Fully-developed spore-morula, more highly magnified than in 
Fig. 7. 
