Beck, Conrad, 1864- · London, R. & J. Beck, Ltd. · leaf 134
s a much moredirect development. On these the skin ishard except in patches, where alone foodcan enter; and around these soft patches Fig. 127.—^Aoineta.there is usually a ring of rapidly vibra-ting hairs, which create a current, bringing the floatingparticles into contact with the absorbent… … 132 THE MICROSCOPE creature, lias also a large disc-like surface where there is prac-tically no sldii to its jelly. The cilia which vibrate around thisdisc cause a powerful current to flow, and it is amazing to watchthe smaller kinds of Protozoa being hustled into the creaturesbody, where they swim…
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