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 192
toward the pole of the terrella,because the loadstone imparts instantaneous verticity to theopposite sphere. The earths efficiency is the same, producedby the same cause. For if in a thick box made of gold (thedensest of metals) or glass, or marble, you put a needle free to MOTION PRODUCED BY… … that prisons it, it turns to its desiderated points of north andsouth. And it does the same though it be shut up in iron*vaults sufficiently roomy. Whatever bodies are produced hereon the earth or are manufactured from natures products byart, all consist of the matter of the globe : such bodies do…
Magnetism
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