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Picture - Cosmic Polymath

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ADVANCE IN LOWER PLANT AND ANIMAL FORMS<br />

PLATE LXXIII<br />

PLATE; LXXIII<br />

This plate illustrates the presence of cilia in large numbers in Infusoria. They occur on various parts of<br />

the body and have a high significance functionally, as they act as organs of locomotion, produce currents which<br />

assist in ahmentation, and, in some instances, entangle food. Several of the figures reveal longitudinal and trans-<br />

verse markings (incipient and real segmentation) ; others indicate spiral structure.<br />

Fig. 1.—Encysted animalcule {Ceralium divergens), x 500.<br />

Fig. 2.—Similar animalcule with carapace cast oft'.<br />

Figs. 3 and 4.— Animalciili- (Cfymnodiniuin lachmanni) dividing by longitudinal iission, x 300.<br />

Figs. 5 and 6.—Two monads {Gymnodinium marlnum), one of which (Fig. 6) is devouring a smaller monad, x 600.<br />

Fig. 7. Anoplophrya filum covered with cilia and displaying numerous contractile vesicles (

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