THE Managers of the Royal Institution have awarded the Actonian Prize for 1935, of one hundred guineas, to Mr. W. T. Astbury, for his papers on “X-ray Studies of the Structure of Hair, Wool and Related Fibres”. The Prize is awarded septennially, and is given, in the quaint phrasing of the deed of trust of the Acton Endowment, to the “author of the best essay illustrative of the wisdom and beneifi-cence of the Almighty in such department of science as the said Committee of Managers for the time being of the said Institution shall in their discretion select”. It is provided that the award may be made in respect of essays or papers already published. Mr. Astbury was for some years an assistant in the Davy Faraday Research Laboratory of the Royal Institution, working with Sir William Bragg on various problems in connexion with the X-ray analysis of crystal structure. He left the Laboratory in 1928, and is now lecturer in textile physics and director of the Textile Physics Research Laboratory of the University of Leeds. He has applied the X-ray technique acquired during his earlier work to textile problems, and the Actonian Prize is awarded to him in respect of the two valuable papers, under the general title given above, published in the Philosophical Transactions of the Royal Society.