TY - JOUR T1 - An Abstract of a Letter from Petrus Van Muschenbroek, M. D. F. R. S. Professor of Mathematicks and Astronomy in the University of Utrecht, in Holland; To Dr. J. T. Desaguliers, F. R. S. concerning Experiments Made on the Indian Magnetick-Sand JF - Philosophical Transactions (1683-1775) VL - 38 SP - 297 EP - 302 PY - 1753/01/01/ UR - http://dx.doi.org/10.1098/rstl.1733.0047 M3 - doi:10.1098/rstl.1733.0047 AU - Muschenbroek, P. ER -