reproduction of, [67] f.;

economic uses of, [69] f.;

palaeontology of, [69] f.

Forbes, [338]

Force, dual, of dividing-cell, [26] n.

Forcepia, [223]

Forceps, [222]

Forcipulata, [462], [473] f.

Forcipulate pedicellaria, [456], [473]

Formative vacuole of contractile vacuole, in Flagellata, [110], [115];