Referee's report by Alfred Fowler, on a paper 'On three Huygens Lenses in the possession of the Royal Society of London' by Ralph Allen Sampson and Alexander Eugen Conrady Sectional Committee: Physics Not recommended for publication in the 'Philosophical Transactions of the Royal Society'. The paper is of historical interest, but does not fulfil the criteria for inclusion in the Royal Society journals. The paper is well suited for the Proceedings of the Optical Society. [Not published] Endorsed on verso as received 3 April 1929. [April 1929]