The most interesting objects, however, about Crewe are the railway works. These are placed on a large tongue of land near the station, and so adapted, that wagons, and carriages, and engines can easily be run into them from the main line. In these works every thing connected with "the rolling stock" of the company for the northern section of the line (Walnerton being used for the southern) is made and repaired. The number of hands employed at present is about eight hundred; but formerly, when railways were more prosperous than now, it exceeded a thousand. The workmen seem to belong, in tolerably equal proportions, to the four great divisions of the United Kingdom; and the slow, deliberate speech of the Scot, the rich brogue of the Irishman, and the sharp, quick utterance of the Welshman, have lost very little of their purity and richness amid the air of the county palatine of Chester. The greater portion of the work is carried on in long, largo sheds, for the most part of one story, and called the "fitting," "erecting," and other shops, according to the nature of the work done in them. The artisans may be divided into two great classes--the workers in metal, and those in wood; the former being employed in making locomotives' wheels, axles, springs, &c, and the latter in constructing the carriages. By far the greatest number of hands are employed in the former. That our hasty inspection may begin at the beginning, let us peep at the foundry. Both brass and iron are east here, but to-day it is iron. The sandy floor is covered with moulds of all descriptions, and swarthy workmen are preparing them to receive the melted iron. Occasionally you are startled by the shout of "Mind your eye!" which must be taken in its literal signification, for it comes from a moulder blowing away with a bellows the superfluous grains of fine sand, which, if once in the eye, will give some trouble. The moulds are ready, the furnace is opened, and a stream of bright white metal rolls out into the pots prepared for its reception, and is speedily poured into the moulds. In an adjoining shed are blacksmiths plying forehammers; but their greatest efforts are entirely eclipsed by the mighty steam-hammer that is seen at work in another part of the shed. This hammer is the invention of Mr. Nasmyth, of the Bridgewater Foundry, near Manchester. It moves up and down in a strong frame, at a speed subject to such nice regulations, that, according to the will of its director, it can gently drive a nail, or crush to splinters a log of wood. When Lord John Russell lately visited Manchester, the delicate touch of this hammer was strikingly displayed before him: an egg was procured, and placed in a wine-glass, and such was the power possessed over this giant, that after a little adjustment, the mighty hammer was brought repeatedly down so as just to chip the egg as gently as by a spoon in the hands of a child, while the glass was not in the slightest degree injured or disturbed.