Ingushians, [139].

Inhul, [69], [103], [253], [326], [335] f.

Inhuletz, [50], [80] f., [103], [326].

Inland sea, [6], [16].

Insects, [113].

Iran, [218], [277].

Irkutsk, [234].

Iron, mining, industry, [225], [277], [290], [336].

Iron steamboat construction, [291].

Irpen, [50], [73], [80].