TY - JOUR T1 - A Demonstration of an Error Committed by Common Surueyors in Comparing of Surueys Taken at Long Interuals of Time Arising from the Variation of the Magnetick Needle, by William Molyneux Esq; F. R. S. JF - Philosophical Transactions (1683-1775) VL - 19 SP - 625 EP - 631 PY - 1753/01/01/ UR - http://dx.doi.org/10.1098/rstl.1695.0111 M3 - doi:10.1098/rstl.1695.0111 AU - Molyneux, W. ER -