I am aware that sandbags which have been rot-proofed would remain serviceable in use for longer periods, but I am advised that the substantial cost of rot-proofing would be justified only if it were intended that the bags should be stored ready-filled. It is not intended that any of the bags issued to local authorities should be stored ready-filled; and local authorities were therefore advised, in the circular to which my hon. and learned Friend refers, that sand-bags issued to them by my Department should not be rot-proofed, and that the cost of rot-proofing any other sandbags in their possession would not be allowed to rank for grant under the Air-Raid Precautions Act. I see no reason to withdraw that circular.