Thuret, on the division of the zoospores of an alga, ii. [378].
Thwaites, G. H., on the cats of Ceylon, i. 46;
on a twin seed of Fuchsia coccinea and fulgens, i. 391.
Tiburtius, experiments in rearing wild ducks, i. 278.
Tiger, rarely fertile in captivity, ii. [150], [151].
Tigridia conchiflora, bud-variation in, i. 386.
Time, importance of, in the production of races, ii. [243].
Tinzmann, self-impotence in the potato, ii. [137].
Tissues, affinity of, for special organic substances, ii. [380].
Titmice, destructive to thin-shelled walnuts, i. 356;