amongst Protozoa, [278];
supposed botanical proofs of, [387].
Trematodes, parasitic in Mollusca, [57], [131], [133].
Trichodinidae, conjugation of, [287].
Trichoplax adhaerens, [141].
Tridacna gigas, length of life of, [56].
Trinchese, on polar bodies, [189], [224].
Tropaeolum, two kinds of leaves of, [396].
Turkey, the length of life of, [36].
Twins, [380].