Referee's report by Robert John Strutt, Lord Rayleigh, on a paper 'An inverstigation of the ionising power of the positive ions from a glowing tantalum filament in helium' by Frank Horton and Ann Catherine Davies Sectional Committee: Physics and Chemistry Recommended for publication in the 'Proceedings of the Royal Society of London'. Considers the paper prolix. Suggests it is not up to the referee to tell the author how to present his results. [Published in the 'Proceedings of the Royal Society of London' A, 1919] Endorsed on verso as received 28 October 1918. [October 1918]