William Gilbert of Colchester, physician of London, On the loadstone and magnetic bodies and on the great magnet the earth. A new physiology, demonstrated with many arguments and experiments .. (1893)
Gilbert, William, 1544-1603, Mottelay, Paul Fleury, b. 1841, tr, Wright, Edward, 1558?-1615 · New York, J. Wiley & sons · leaf 399
arth orcompacted terrestrial matter descends through that space, beit filled with water or with air, to a more definite centre {prin-cipium) than air or water, and seeks the solid globe. But thecentre of the earth, as also the whole earth itself, has no weight:separated parts tend to their… … balanced by E, at F it is balanced by G^; if at Ify by /. And,similarly, if it is at L, it is balanced by M. Thus the wholeglobe, having a natural axis, is balanced in equilibrium and isset in motion easily by the slightest cause, but chiefly for thereason that the earth, in its own place, is in no…
Magnetism
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