Supplemental estimate of appropriation, Quartermaster Corps, for continuing constructions of barracks, etc., Panama Canal Zone. Letter from the Acting Secretary of the Treasury, transmitting copy of a communication from the Secretary of War, submitting a supplemental estimate of an appropriation in the sum of $767,597.29, required by the Quartermaster Corps of the Army for continuing construction of barracks, quarters, etc., for accommodation of troops in the Canal Zone.