Referee's report by Joseph Larmor, on a paper 'Experiments with vacuum gold-leaf electroscopes on the mechanical temperature effects in rarefied gases' by James Thomson Bottomley and F A King Sectional Committee: Physics and Chemistry Defers opinion regarding publication in the 'Proceedings of the Royal Society of London'. Has written to the author asking 'that the matter be carried further' before a paper is submitted. Addendum 13 February 1907 by Joseph Larmor - Author has modified wording and title. Considers paper now suitable for the Proceedings. [Published in the 'Proceedings of the Royal Society of London'] Endorsed on verso as received 8 February 1907. 7 February 1907