Referee's report by Joseph John Thomson, on a paper 'On the nature of electrocapillary phenomena.—I. Their relation to the potential differences between solutions' by Samuel Walter Johnson Smith Recommended for publication in the 'Philosophical Transactions of the Royal Society'. Suggests adding an introduction including the Lippmann-Helmholtz theory. Suggests the author take note of a recent paper by Emil Gabriel Warburg. Subject: Physics and Chemistry [Published in the Philosophical Transactions of the Royal Society] Endorsed on verso as received 17 February 1899. 3 February 1899