§ Sir W. Smithersasked the First Lord of the Admiralty what were the conditions under which the acoustic-mine invention was given to the Admiralty during the last war; whether the details of this invention have at any time been published in book form; and, if so, by whose authority?
Mr. AlexanderI am not clear to which device my hon. Friend refers. Several types of mechanism were tried but the results of the investigations have not been published.