TY - JOUR T1 - A Letter from Gowin Knight, M. B. to the President; Concerning the Poles of Magnets Being Variously Placed JF - Philosophical Transactions (1683-1775) VL - 43 SP - 361 EP - 363 PY - 1753/01/01/ UR - http://dx.doi.org/10.1098/rstl.1744.0075 M3 - doi:10.1098/rstl.1744.0075 AU - Knight, G. ER -