Copy letter from David Prain, Treasurer and Vice President of the Royal Society; to Messrs L. Messel & Co.; 31 Throgmorton Street, London, E.C.2. 'Dr. [Rudolph] Messel Decd. I am obliged by your letter of yesterday's date, and enclose herewith cheque for £1,538.3.0., being the balance due to complete the purchase of £5,000 three months Treasury Bills.' [Not enclosed.] 12 March 1921