TY - JOUR T1 - A Letter from Captain John Waddell to Mr. Naphthali Franks Merchant, concerning the Effects of Lightning in Destroying the Polarity of a Mariners Compass; To Which Are Subjoined Some Remarks Thereon, by Gowin Knight, M. B. F. R. S. JF - Philosophical Transactions (1683-1775) VL - 46 SP - 111 EP - 117 PY - 1753/01/01/ UR - http://dx.doi.org/10.1098/rstl.1749.0022 M3 - doi:10.1098/rstl.1749.0022 AU - Waddell, J. AU - Knight, G. ER -