Individualists, [375] et seq.

Individuality in reproduction, [16] et seq.

Indo-Scythians, [199], [430]

Indus, [149], [429]

Industrial revolution, [365] et seq.

Infantry, [178]

Influenza, [414]

Innocent III, Pope, [276], [279], [280], [432]

Innocent IV, Pope, [281]

Innsbruck, [313]