In January, 1779, he again took his seat in the Continental Congress, and entered upon the duties of his station with the utmost vigour and industry. On the 24th of the ensuing August, he resumed his station in the senate of his native state. Much important business was before the legislature, requiring wisdom, energy, and unity of action. To devise some plan of relief from a depreciated currency and a prostrate credit, was an important item. Mr. Floyd was at the head of a joint committee appointed for this purpose, and reported a plan that proved him to be an able financier and a man of deep thought and investigation. It was predicated upon a gradual and just system of taxation, to be carried into effect by responsible and honest agents, with good and sufficient sureties for the payment of all monies collected to the proper officer—the state treasurer. In October of that year, Mr. Floyd, Ezra L’Hommedieu, and John Loss were appointed by the New York legislature delegates to a convention of the eastern states convened for the purpose of devising some system by which supplies of provisions could be more readily obtained and preserved from the grasp of avaricious monopolists. Immediately after the discharge of the duties assigned him, he again took his seat in Congress. On the third of December he was elected one of the board of admiralty, and on the thirteenth of the same month a member of the treasury board. By incessant application to the various duties that devolved upon him, his health became impaired, and in April following he obtained leave of absence. In June he repaired to the senate of New York, and was immediately appointed upon a joint committee to act upon resolutions of Congress, involving the important relations between the state and general government. He opposed, unsuccessfully, the plan of making bills of credit a legal tender, but had the pleasure in after life of seeing the principles he then advocated sanctioned and adopted.