276 C. CLIFFORD DOBELL. 
g. 72.—Cyst with two fully-formed nuclear spindles. 
Fig. 
the lower. 
7 
73.—Later stage. The upper spindle is further advanced than 
Fig. 74.—Final stage in seeond nuclear division. 
Fig. 75.—Cyst with four nuclei, after second nuclear division, Com- 
pare nuclei—as regards size and structure—with those in figs. 64 and 
70. (Heidenhain and eosin.) 
Fig. 76—Extrusion of chromatin masses. The vacuole has now 
disappeared. (Heidenhain.) 
Fig. 77.—Cyst after extrusion of chromatin and collapse of vacuole. 
The membrane is thicker and yellowish. Four very distinctly outlined 
nuclei are seen. Compare their structure with that of nucleus in fig. 54, 
Fig. 78.—Degenerating cyst, with four nuclei. 
Fig. 79.—Living 4-nucleate cyst—same stage as fig. 77. (Leitz zz in. 
oil imm. X oe. 5.) 
PLATE 5. 
[Figures, unless otherwise stated, drawn from living animals, under 
Zeiss 2°5 mm. apo. water-immersion, comp. oc. 12.) 
Figs, 80-90.—Chlamydophrys stercorea. 
Fig. 80.—Shelled Chlamydophrys, in feces of toad. (Formalin 
40) per cent. Heidenhain iron-hematox.) 
Fig. 81.—Ameeba stage of Chlamydophrys, from lar ge intestine 
of toad. 
Fig. 82.—Similar organism. (Sublimate-alcohol, Heidenhain). 
Fig. 83.—Cyst—encrusted, and with a single nucleus. (Formalin 
40 per cent. Heidenhain.) 
Fig. 84.—An animal which has encysted inside its shell. 
Fig. 85.—Cyst containing two individuals. (Sublimate - alcohol, 
Heidenhain.) 
Fig. 86.—Cyst, more highly magnified. (Comp, oc. 18), Note the 
peculiar knobs or excrescences on the outside, and the thick encrustment 
of bacteria, ete. 
Figs. 87-90.—Four stages in the development of an amoeboid 
Chlamydophrys from its cyst, after moistening the dried-up feces 
with water. (Comp, oc. 6.) 
Fig. 91-97.—Eimeria rane. 
Fig. 91,—An oocyst containing four spores and a residuum. 
