Referee's report by Joseph Larmor, on a paper 'The modulus of torsional rigidity of Quartz fibres, and its temperature coefficient' by Frank Horton Sectional Committee: Physics and Chemistry Recommended for publication in Philosophical Transactions, as a continuation of a previous paper on metals, this one being the more important of the two. Modification is not discussed and all the illustrations should be reproduced. No general remarks are given. [Published in the Philosophical Transactions A, 1905]. Endorsed on verso as received 20 December 1904. December 1904