Copy letter from Edwin Deller, Assistant Secretary of the Royal Society; to the Director of the Marine Biological Association Informs the Director that owing to the increase in costs the Society has decided to make a small charge to cover the expenses of heating, lighting and cleaning, in connection with loaning its rooms to other bodies. Explains that the charge for the use of a room will be one guinea, and a half-guinea for the use of a lantern. [Memorandum attached which reads 'also sent to Challenger Society, Egypt Exploration Fund, Eugenics Education Society, British Academy. And on July 20 National Trust'.] 1 July 1920