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 269
ensionnorthward; and so let him complete the task at one or twoheatings of the iron (if needed); but ever while he hammers 212 WILLIAM GILBERT. and lengthens it, have him keep the same point of the ironlooking north, and lay the finished bar aside in the same direc-tion. In this way fashion two,… … passed through suitable pieces of cork) will move about inwater, and, when the end is duly reached, will point north.And as an iron bar takes verticity from the direction in whichit lies while being stretched, or hammered, or pulled, so too ♦ will iron wire when drawn out toward any point of the…
Magnetism
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