Enemy Air Raids Public Shelters (Advisory Committee) 23. Mr. GILBERT asked the Secretary of State for the Home Department if he will state the names of the members of the Advisory Committee who advise the police authorities as regards the safety of air raid shelters in the London area; and will he state if the London County Council, who are the Building Act authority for London, have been consulted in any way on this matter? Sir G. CAVE The following are the names of the members of the Advisory Committee: Sir A. Stenning, F.R.I.B.A., Past President of the Surveyors' Institution (Chairman).Mr. E. C. P. Monson, F.R.I.B.A., F.S.I.Mr. Fitzroy Doll, F.R.I.B.A., F.S.I.Mr. Dendy Watney, F.S.I.Mr. Horace Cheston, F.R.I.B.A., F.S.I.Mr. Percy Monckton, F.R.I.B.A., F.S.I.Brigadier-General F. Horniblow, C.B.Major F. G. P. Gedge, D.S.O., R.E., andLieutenant W. P. H. Roe, R.E. The Commissioner also has the assistance of an officer of the Royal Engineers invalided from France, who has had exceptional experience in the construction of dug-outs and in the protection of buildings against shell-fire. The Commissioner has been in correspondence with the superintending architect of the London County Council. Maroon Warnings The following question stood on the Paper in the name of Mr. G. FABER: 24. To ask the Secretary of State for the Home Department if he can state why air raids on London, whether by night or day, cannot be signalled by maroons, seeing that is the most efficient way of warning people to take cover? Mr. FABER I am aware this was answered yesterday by the Home Secretary, and I only ask it now in case the right hon. Gentleman may have anything further to add. Sir G. CAVE No; I will refer my hon. Friend to the answers which I gave yesterday.