Copy letter from Herbert Rix, to Professor Robert Henry Thurston, Sibley College, Cornell University, Ithaca, New York, United States of America Professor [Theodor Wilhelm] Engelmann's Croonian Lecture 'On the Nature of Muscular Contraction' will be published in the next number of the 'Proceedings of the Royal Society' 345, in about a fortnight. This can be purchased from Messrs Harrison & Sons. Meanwhile Rix fears there is nothing to do but connect Thurston with the advance reports which have appeared in sundry papers. 13 May 1895