§ Sir J. D. REESasked the Under-Secretary of State for War whether he is aware of the fact that Mr. Charles Higgins, F.R.C.S., has by experiments established the fact that triplex glass, properly ground and treated, is a most valuable protection for the eye from projectiles, splinters, stones, and such substances as are scattered broadcast by shell bursts, and that such triplex glass does not itself splinter and cause wounds when broken by a blow, by shot or otherwise; that it is also a protection in the case of the breaking of windows in cabs, cars, railway and other carriages, as a result of collisions; and whether he will inquire into this matter and see whether our troops can be supplied with such glass if the results of his inquiries are satisfactory?
§ Mr. MACPHERSONThe properties of triplex glass are known to the War Office. Some two years ago the question was considered of substituting this glass for ordinary glass in spectacles for soldiers, but it was decided not to adopt it in view of the expense involved and of certain optical objections and difficulties in producing the enormous quantities of lenses required. Trials have also been made of vizors fitted with triplex glasses for eye protection for the troops, but they have not been recommended for adoption.