Paper, 'On galvano-hysteresis. (Preliminary notice)' by Silvanus P [Phillips] Thompson Thompson writes: 'If a sufficiently strong electric current is passed through a coil of insulated soft iron wire for a short time, and the wire then disconnected, and if, after the lapse of any length of time, the wire is placed in the circuit of a galvanometer, and is then subjected to longitudinal magnetisation or to a succession of alternately directed longitudinal magnetisations, it is found to discharge an electric current through the galvanometer.' Annotations in pencil and ink. Subject: Electricity Received 16 March 1891. Read 9 April 1891. Communicated by George Carey Foster. A version of this paper was published in volume 49 of the Proceedings of the Royal Society as 'On galvano-hysteresis. (Preliminary notice.)'. 1891