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 216
ends by a loadstone more powerfully than iron notmagnetized. If a small iron bar be set erect on the pole of a loadstone,*another bar-iron pin in touch with its upper end becomesfirmly attached thereto, and if it be moved away pulls thestanding bar from the terrella. If, to the nether end of the… … Here the iron bar C coalesces with the terrella A, and thus itsforce is enhanced and awakened magnetically both in the endin conjunction and also in the distal end by reason of its con-tact with the terrella; the distal end furthermore receivesenergy from the loadstone B, and the pole D of this…
Magnetism
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