Referee's report by Vernon Herbert Blackman, on a paper 'Studies in the geotropism of pteridophyta VI—On rhythm in graviperception and reaction to gravity' by T L Prankerd Sectional Committee: Botany Recommended for publication in the 'Proceedings of the Royal Society of London'. Suggests expanding on the summary. [Published in the 'Proceedings of the Royal Society of London'] Endorsed on verso as received 28 October 1935. 24 October 1935