Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Messrs. G. Bell and Sons Ltd., York House, Portugal Street, W. C. 2 Informs G. Bell and Sons ltd. that they can expect permission to be given to reproduce in Sir William Bragg's book 'Concerning the nature of things' figures1-4 and plate 9 from the paper by H.H. Carpenter in Proceedings Vol; A.100. [The production of single crystals of aluminium and their tensile properties]. States that the permission is subject to the consent of the author. 24 July 1924