sole cause of congenital variations, [12], [89-90], [102], [135], [141], [153], [158];
did not arise through the agency of natural selection, [13-14];
in multicellular organisms, [51];
Galton on the origin of, [103];
in Cytisus adami, [127].
Significance of sexual reproduction, see [Sexual Reproduction].
Somatic-cells, nucleo-plasm of, [30];
and sexual cells, [75-77], [81], [84].
Somatic-idio-plasm, [32-33];
and germ-plasm, [69].