TY - JOUR T1 - Extract of a Letter from Professor Kamtz to Lieut. Colonel Sabine, on Corrections of the Constants in the General Theory of Terrestrial Magnetism JF - Abstracts of the Papers Communicated to the Royal Society of London (1843-1854) VL - 6 SP - 45 EP - 55 PY - 1850/01/01/ UR - http://dx.doi.org/10.1098/rspl.1850.0020 M3 - doi:10.1098/rspl.1850.0020 AU - Kamtz, P. ER -