§ Sir WILLIAM COLLINS
asked the President of the Board of Trade whether Dr. Edridge Green was employed as expert adviser to the Board in regard to sight tests; and, if so, when he ceased to act in that capacity and on what grounds; whether he is satisfied with the method of testing for colour blindness at present employed by the Board; on whose advice it was adopted; and whether the adoption of an alternative system is under consideration?
Dr. Edridge Green was appointed a member of the International Code of Signals Committee in May, 1889, when the question of colour-blindness was referred to it. In view of the report of the Royal Society's Committee on colour vision, issued in April, 1892, the subject was withdrawn from the consideration of the Signals Committee, of which Dr. Edridge Green then ceased to be a member. The present system of tests is based on the report of the Royal Society's committee.