Copy letter from Herbert Rix, to Messrs Peter and Jacob Plyapis, Railway Station of the Orel - Gryazi Railway, Russia The Messrs paper relative to the cause of gravity has been received and submitted. However no paper is ever admitted for reading before the Society unless it has the imprimatur of a Fellow as to its fitness for reading. Rix therefore thanks the Messrs and returns the memoir herewith. 10 October 1892