Referee's report by William Mitchinson Hicks, on a paper 'On the frictional resistances to the flow of air through a pipe' by John H Grindley and A H Gibson Sectional Committee: Physics and Chemistry Not recommended for publication in the 'Philosophical Transactions of the Royal Society'. Considers the paper less about 'Natural Knowledge' and more like 'Technical Engineering'. Cannot see that any care has been taken in maintaining the shape, diameter or sectional area of the lead pipe in the experiment, and no care taken in drying the experimental air of its saturation. [Published in the 'Proceedings of the Royal Society of London'] Endorsed on verso as received 11 June 1907. [June 1907]