In the preceding statement, we have simply given an outline of the mechanical branches of the business, and a general description of the lumber required, and its peculiar seasoning and preparation prior to use. Large quantities of rosewood are used for veneering and carved work, slipping, &c. Just now, this is the fashionable wood for furniture; nothing else is used in the external finish of the piano-fortes of Messrs. Boardman & Gray. A view of their large veneer-room would excite the astonishment of the novice. Rosewood is brought from South America, and is at present a very important article of commerce, a large number of ships being engaged in this trade alone, to say nothing of the thousands employed in getting it from its native forests for shipping, and the thousands more busy in preparing it for the market after it has reached this country. Much that is used by Messrs. Boardman & Gray is sawed into veneers, and prepared expressly for them at the mills at Cohoes, N. Y. They buy large quantities at a time, and, of course, have a large supply on hand ready for immediate use. They always select the most richly-figured wood in the market, believing that rich music should always proceed from a beautiful instrument. Thick rosewood is constantly undergoing seasoning for those portions which require solid wood. And one thing, dear reader, we would say; and that is, where rosewood veneers are put on hard wood well seasoned, and prepared correctly, they are much more durable than the solid rosewood would be, not being so liable to check and warp. They also make use of a large quantity of hardware in the form of "tuning pins"--upwards of a ton per year. Of iron plates they use some twenty-five tons. Their outlay for steel music wire amounts to hundreds of dollars per year; not to speak of the locks, pedal feet, butts and hinges, plated covering wire for the bass strings, bridge pins, centre pins, steel springs, and screws of various kinds and sizes, of which they use many thousand gross annually. Of all these, they must keep a supply constantly on hand, as it will not do for their work to stop for want of materials. A large capital is at command at all times; and, as many of these things require to be made expressly to order, calculation, judgment, and close attention are needed to keep all moving smoothly on.