Reproduction, rate of, [63].
Resemblance to parents in mongrels and hybrids, [273].
Reversion, law of inheritance, [14].
—— in pigeons to blue colour, [160].
Rhododendron, sterility of, [251].
Richard, Prof., on Aspicarpa, [417].
Richardson, Sir J., on structure of squirrels, [180].
——, on fishes of the southern hemisphere, [376].
Robinia, grafts of, [262].
Rodents, blind, [137].