Letter from Henry George Lyons, Science Museum, South Kensington, London, to Edwin Deller The Geological Government Grant Committee took the view that before £50 was expended on microphotographs of flint surface fractures, there should be some evidence that the method would be profitable. They recommended a grant of £10 to provide four sets of three photographs. In the case sent by Reid Moir, there is a difference between the photographs which is readily recognizable. If he had provided four sets to show the same distinctions it might have provided the evidence desired by the committee. 30 June 1920