Hamilton, Sir Wm., [267].
Harmony, musical, [54], [279].
Heart in birds and reptiles, [158].
Hegel, [217].
Heliconidæ, [29].
Hell, [194].
Heptanchus, [172].
Herbert Spencer, Mr., [20], [28], [67], [72], [163]-[166], [168], [170]-[172], [184], [187], [202], [203], [205], [218], [228], [245], [246], [248], [251].
Hessian flies, [170].