Paper, 'On the magnetic phenomena produced by electricity' in a letter from Sir H [Humphry] Davy to W H [William Hyde] Wollaston Subject: Physics Published in Philosophical Transactions as 'On the magnetic phenomena produced by electricity; in a letter from Sir H. Davy, Bart. F. R. S. to W. H. Wollaston, M. D. P. R. S'. Written by Davy at 23 Lower Grosvenor Street, London. Read 16 November 1820. Abstract published in Abstracts of the Papers Printed in the Philosophical Transactions of the Royal Society of London [later Proceedings of the Royal Society of London], Volume 2, 1833. 12 November 1820