Referee's report by Henry Woods, on a paper 'The pelmatoporinae, an essay on the evolution of a group of cretaceous polyzoa' by William Dickson Lang Sectional Committee: Geology Recommended for publication in the 'Philosophical Transactions of the Royal Society'. Suggests reducing the size of some of the figures. The paper, although only dealing with a small group, has great bearing on the principles of evolution. [Published in the Philosophical Transactions of the Royal Society B, 1920] Endorsed on verso as received 8 November 1917. [November 1917]