Elements of biology, with special Elements of biology, with special reference to their rôle in the lives of animals elementsofbiolog00buch Year: 1933 RESERVOIR CONTRACTILE VACUOLE FLA6ELLUM MASTICOPHOPA- EUCLENA FIG. 30. INFUSORIA-PARAMOECIUM PLASMODIA RED BLOOD CORPUSCLE FIG. 3/. SPOROZOA-PLASMODIUM (MALARIA) Figs. 28, 29, 30, and 31.—Examples of the four classes of Protozoa. (Fiji. 29 from various sources; Fig. 31 re-drawn after Calkins: Biology, published by Henry Holt and Co.)

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