98 



ELEMENTS OF BIOLOGY 



PROTOZOA 



PSEUDOPODIUM 



FOOD VACUOLE 





CONTRACTILE VACUOLE 



NUCLEUS 



FIG. 28. SARCO D I NA- AMOEBA 



EYE SPOT 



COLOR PLASriD 



NUCLEUS 



CILIA 



CONTRACTILE VACUOLE 



UICRONUCLEUS i 



UACRONUCLEUS 



CONTRACTILE VACUOLE 



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.) 



