Paralcyonium, [349]

Paramecium, [137], [143] n., [151], [153];

specific gravity of, [13] n.;

thigmotaxy of, [20];

reaction to repellent stimuli, [21] n.;

thermotaxy of, [22];

galvanotaxy of, [22];

chemiotaxy of, [23];

trichocysts of, [143], [151];

contractile vacuoles of, [143] n., [151];