Hildebrandt, on duration of life in plants, [32], [65];
on cross-fertilization, [309].
His, on heredity, [166], [390], [412];
on the transmission of mutilations, [423].
Hoek, on polar bodies in Balanus, [218].
Hoffman, on transmission of acquired characters, [407].
Homoplastides, [122], [139], [146], [202].
Horse, length of life of, [6], [7];
in the Falkland Islands, [99].
Humboldt’s Atur Parrot, [12].