In the Senate of the United States. January 27, 1857. -- Submitted and ordered to be printed. Mr. Slidell made the following report. The Committee on Naval Affairs, to whom was referred the memorial of Captain F. Buchanan, United States Navy, praying to be allowed the difference between the pay of a captain and that of a commander, while in command of the United States steam frigate "Susquehanna" during her recent cruise in the East India, China and Japan Seas, have had the same under consideration, and report..