Tait, [38], [204].

Tennyson, [198], [268].

Theophilus, [329].

Thomson (Sir William), [25], [26].

Toepler, [95].

Tyndall, [9], [104], [123], [146], [148], [149], [227].

Upham, [28].

Urbanitsky, [9], [70].

Vogel, [170].

Voss, [94], [233], [290].