Referee's report by Geoffrey Ingram Taylor, on a paper 'Further experiments on the behaviour of single crystals of zinc subjected to alternating torsional stresses' by Herbert John Gough and H L Cox Sectional committee: Engineering sciences Recommended for publication in Philosophical Transactions, in full. [Published in Proceedings of the Royal Society A, 1930]. Endorsed on verso as received 17 February 1930. February 1930