production of almond-like fruit by peach-seedlings, i. 339.

Vanessa, species of, not copulating in captivity, ii. [157].

Variability, i. 4, ii. [371]-[373], [394]-[397], [406]-[420];

causes of, ii. [250]-[270];

correlated, ii. [319]-[338], [353]-[355], [419]-[420];

law of equable, ii. [351]-[352];

necessity of, for selection, ii. [192];

of selected characters, ii. [238]-[239];

of multiple homologous parts, ii. [342].

Variation, laws of, ii. [293]-[356];