contabescence in, ii. [166];
hose and hose, i. 365;
with coloured calyces, sterility of, ii. [166].
Primula sinensis, reciprocally dimorphic, ii. [132].
Primula veris, ii. [21], [109], [182].
Primula vulgaris, ii. [21], [109].
Prince, Mr., on the intercrossing of strawberries, i. 352.
Procyon, sterility of, in captivity, ii. [152].
Prolificacy, increased by domestication, ii. [174].
Propagation, rapidity of, favourable to selection, ii. [297].