Referee's report by David Meredith Seares Watson, on a paper 'The phylogeny of the ammonite family liparoceratidae' by L F Spath Sectional committee: Geology Recommended for publication in Philosophical Transactions, in full. The argument of the paper is easy to follow, but it lacks a precise statement of the characters which the author depends on. A statement of this kind is essential. [Not published]. Endorsed on verso as received 22 February 1937. February 1937