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 386
earth that thecollimations of the verticities do not continually regard a fixedpoint in the firmament and in the visible heavens. For thechanges of the equinoxes are caused by a certain inflection ofthe earths axis, yet in this inflection the earth hath from herown forces a steadfastness in her… … on both sides from the plane of the equator toward the polesin the asther, which is without resistance, or in vacuum; * Aether, according to Sir Isaac Newton, is a thin subtile matter muchfiner and rarer than air. Sometimes it is termed by him a subtil spirit, as inthe latter part of his Principia,…
Magnetism
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