On the magnet, magnetick bodies also, and on the great magnet the earth / a new physiology, demonstrated by many arguments & experiments

by Unknown

Hugo Grotius, [167], [168].

Inclination. See dip.

interposition of bodies, [53], [66], [83], [85], [89], [137].

iris gem, the, [48].

iron, its nature and occurrence, [19], [20], [22], [25].

filings of, [37], [69], [90], [91], [92], [104].

its various names and qualities, [23], [33], [36].

its various uses, [23], [24], [39], [86], [90], [95].

medical uses of, [33], [35].

surpasses loadstone, [69], [95].