Referee's report by James Hartley Ashworth, on a paper 'Experiments on the egg-laying instincts of the sawfly, Pontania salicis Christ., and their bearing on the inheritance of acquired characters; with some remarks on a new principle in evolution' by John William Heslop-Harrison Sectional Committee: Zoology Recommended for publication in the 'Proceedings of the Royal Society of London'. [Published in the 'Proceedings of the Royal Society of London' B, 1927] Endorsed on verso as received 30 December 1926. [December 1926]