C. grandis, [319]
Charybdeidae, [318]
Cheilostomella, [59]
Cheilostomellaceae, [59]
Chela (a complex microsclere derived from a sigma and consisting of a curved shaft bearing recurved processes), [234]
Chemical, reactions, of protoplasm and of vacuoles, [13];
substances in solution, [19], [22] f.;
rays of spectrum in relation to plant pigments, [36] n.
Chemiotaxy, [23];
its rôle in syngamy, [34];