TY - JOUR T1 - The Bakerian Lecture: On the Best Kind of Steel and Form for a Compass Needle JF - Philosophical Transactions of the Royal Society of London (1776-1886) VL - 111 SP - 104 EP - 129 PY - 1821/01/01/ UR - http://dx.doi.org/10.1098/rstl.1821.0011 M3 - doi:10.1098/rstl.1821.0011 AU - Kater, H. ER -