Referee's report by David Keilin, on a paper 'The digestive enzymes of the Onychophora (Peripatopsis spp.)' by Norman G Heatley Sectional Committee: Physiology Not recommended for publication in the 'Proceedings of the Royal Society of London'. Considers the author's choice of material to be unsuitable. The work only adds minor improvement to technique. [Not published] Endorsed on verso as received 9 November 1935. [November 1935]