Copy letter from Herbert Rix, to Messrs Newton & Company, 3 Fleet Street, E.C. 'Dear Sirs, The Officers are inclined to accept your offer of electric lantern microscope and accessories (£50), but desires me first to inquire what are the powers of the objectives which you would include in the £10 for accessories. Yours truly, H Rix Asst. Sec. R.S. [Assistant Secretary, Royal Society]'. 25 February 1896