Only one more operation is necessary for transportation, and that is packing or crating the machine. This is all done in the Shipping Department, which is 230 feet long by 60 feet wide. The boxes and crates have already been completely made up in the Box Shop, and nothing remains but to put the machine into the box or crate, as the case may be, drive three or four nails, mark the package with a stencil plate for its proper destination, on New England’s shores, on the great prairies of the West, amid the savannas of the South, or, perhaps, across the seas, lower it upon the elevator to the great shed, where it is loaded upon the cars. If its route lies _via_ New York, it is placed upon a platform car, which the Company’s own locomotive, the “I. M. Singer,” draws to the dock to be shipped on board the Company’s boat, the “Edward Clark.” A few parts of the machine require to be smoothly polished in order to secure the very best working capacity, and these are sent to the Polishing Room, which is a study of itself. Black wheels of all sizes are here revolving with great speed; some are rolling around on a horizontal axis, some are whizzing rapidly on a perpendicular axis, and from all of them the streams of fiery sparks are flying in unceasing currents, throwing the grimy room and the darkened forms of the busy workmen into a still darker background. This Department is 125 feet long and 50 feet wide. [Illustration: POLISHING ROOM. ] Another room is devoted to the manufacture of the steel springs used in the machine. In another large department, 200 feet long, screws are being made by automatic machinery. In another room, 100 feet long, the tools are made and repaired, and here a large force of skilled workmen is constantly employed. In still another room, filled with electro baths, the silver plated attachments are covered with their silver coats.