Copy letter from Robert William Frederick Harrison, to Joseph Wilson Swan, Fellow of the Royal Society They have had much correspondence regarding the reproduction of Harrison's figures to the paper on stress effects of electrification. The Society thinks the figures may be reproduced satisfactorily as half-tone blocks but as they are not to be reproduced if avoidable, the Society wish to ask if Swan will authorize the reduction of figure four, the largest, just enough to bring it within the 'Proceedings [of the Royal Society]' page. 12 July 1897