Unpublished paper, 'On the kinetic accumulation of stress, illustrated by the theory of impulsive torsion' by Karl Pearson The object of this paper is 'to deal with certain cases of impulsive stress [...] which seem of considerable practical importance, but which so far as I am aware have not hitherto been considered theoretically.' Includes a series of graphs and tables and a letter dated 13 November 1900. Subject: Physics Received 29 May 1900. Read 21 June 1900. 1900