HC Deb 29 February 1916 vol 80 c872
35. Major NEWMAN

asked the Under-Secretary of State for War whether he has been able to obtain a report on the cold-light system which has recently been used with success in France for the detection of hostile aircraft and on the form of shell with which a Zeppelin airship was destroyed during the last few days?

Mr. TENNANT

I have no information that the so-called "cold-light system" has been used with success in France for the detection of hostile aircraft, though the possibilities of this so-called cold light have, of course, been carefully considered. The details of designs and forms of shell and other munitions are not suitable for discussion in public, but I may inform the hon. and gallant Member that the English and French military authorities are in close touch and constant communication on these points, so that the experience of either nation may be available for the other.