§ Mr. SPENCERasked the Home Secretary whether he is aware that nystagmus is on the increase amongst coal miners; and whether he intends to give effect to the recommendation of the Medical Re-search Committee, with regard to a higher standard of illumination, by making it compulsory to provide the same?
§ Colonel LANE FOXI have been asked to reply. The incidence of miners' nystagmus is still very heavy, but the total number of cases in 1924 was slightly less than in 1923; the number of new cases declined both in 1923 and 1924, and I hope will continue to do so. I expect before long to be able to fix a higher candle-power standard for flame safety lamps. As regards electric safety lamps, the present standard of candle power is much higher than the standard for flame lamps, and I am advised that it is not yet practicable to raise it.