Letter from the secretary at war, accompanying a report and sundry statements, supplementary to his report received the 16th instant, in pursuance of two resolutions of this House of the 28th of March last : 23d April, 1798. Referred to the committee of the whole House, to whom is committed the bill making appropriations for the military establishment for the year one thousand seven hundred and ninety-eight, and for other purposes. : Printed by order of the House of Representatives.