Copy letter from an unknown correspondent, to Mr Collings 'Your estimate for Mr Joly's curves (£2-4-0) is accepted. The curves are sent herewith to be put in hand. Herewith eight diagrams for a Report by Prof. Marshall Ward. Please say whether they can be done to form blocks to go into a "Proceedings" ['Proceedings of the Royal Society'] page, and if so, let me have estimate at the earliest possible moment. Your estimate for Prof. [Professor Harry] Marshall Ward's figures illustrating his paper No. 30 (£26-10-0) is accepted. The originals are sent herewith to be put in hand'. 21 May 1894