Influence, local, [83].
Insect, walking-leaf, [35].
Insects, walking-stick and bamboo, [33].
Insectivora, [68].
Insectivorous mammals, [148].
Insectivorous teeth, [68].
Instinct of bull-dog, [260].
Intermediate forms, [128].
Intuitions, primary, [251].
Irregularities in blood-vessels, [182].