Chromatophores, of Algae, [83], [111].

Compositae, pollen of, [5].

Congenital variations, definition of, [5];

inheritance of, [6], [110];

sexual propagation, the cause of, [11];

Darwin on, [13];

origin of, [23], [25], [100], [102];

nutritive congenital changes, [64];

examples of, [64];

specialized congenital changes, [65];