asked the Under-Secretary of State for Air if he will state what particular aeroplanes and seaplanes have been lent by the Air Ministry to Imperial Airways, Limited, for operation since 1st April, 1929; on what dates were they handed over to Imperial Airways, Limited; on what dates were they returned to the Air Ministry; and what estimate, if any, has been made as to the value of the machines to Imperial Airways, Limited, while they were on the service of that company?