TY - JOUR T1 - Magnetic Properties of Alloys of Nickel and Iron JF - Proceedings of the Royal Society of London (1854-1905) VL - 48 SP - 1 EP - 13 PY - 1890/01/01/ UR - http://dx.doi.org/10.1098/rspl.1890.0001 M3 - doi:10.1098/rspl.1890.0001 AU - Hopkinson, J. ER -