Toads on islands, [393].

Tobacco, crossed varieties of, [271].

Tomes, Mr., on the distribution of bats, [395].

Transitions in varieties rare, [172].

Trees on islands belong to peculiar orders, [392].

—— with separated sexes, [99].

Trifolium pratense, [73], [94].

—— incarnatum, [94].

Trigonia, [321].

Trilobites, [307].