bud-variation in, i. 382.
Fuchsia coccinea and fulgens, twin seed produced by crossing, i. 391.
Fuegians, their superstition about killing young water-fowl, i. 310;
selection of dogs by the, ii. [207];
their comparative estimation of dogs and old women, ii. [215];
their power of distant vision, ii. [223].
Fungi, parasitic, ii. [284]-[285].
Furcula, characters and variations of the, in pigeons, i. 167;
alteration of, by disuse, in pigeons, i. 175;
characters of, in fowls, i. 268.