Folliculina, [137];
tube of, [152]
Food, [35] f. (see also Ingestion);
of Higher Animals, [38];
absorption of, by Plants, [38];
in relation to life-cycle of Ciliata, [147] f.;
of Sponges, [237];
of Hydra, [256] and n.;
of Millepora, [261];
of Siphonophora, [304];