TY - JOUR T1 - On Certain Irregularities in the Magnetic Needle, Produced by Partial Warmth, and the Relations Which Appear to Subsist between Terrestrial Magnetism and the Geological Structure and Thermo-Electrical Currents of the Earth. JF - Abstracts of the Papers Printed in the Philosophical Transactions of the Royal Society of London (1800-1843) VL - 3 SP - 123 EP - 125 PY - 1830/01/01/ UR - http://dx.doi.org/10.1098/rspl.1830.0066 M3 - doi:10.1098/rspl.1830.0066 AU - Fox, R. ER -