Take car-building, for an example, in which the reputation of this town is known to the initiated of all the States and many foreign countries. Travelers are at this moment spinning in Wilmington-made railway-carriages over the extremest parts of North and South America, admiring, through Wilmington-made windows, every possible variety of winter and tropical scenery, on which they comment in English, German, French, Spanish and all civilized languages. Such a migratory product as a rail-car is an active messenger of fame for the place of its fabrication. We examine, as a fair type, the Jackson and Sharp Company's works, claimed to be the largest in the New World, and only exceeded by a few British and Continental establishments. The buildings have frontage upon the Brandywine and Christine streams, as well as on the principal railroad. Here are a congeries of two-story buildings, which are together fifteen hundred feet in length by a width of seventy feet. Five miles of heating-pipes warm the rooms for a thousand workmen. There is something logical and consecutive in the arrangement here, which makes it the best spot on the face of the earth for an enthusiast who should wish to demonstrate, what all loyal Americans believe in, the vast superiority of our form of railway-carriage. The cars proceed, in perfectly regular order, from raw material to completion with the progressive march of a quadratic equation in algebra. They seem to be arranged to demonstrate a theory. First the visitor sees lumber in stock, a million feet of it; then, across one end of a long room, the mere sketch or transparent diagram of a car; then, a car broadly filled in; and so on, up to the last glorious result, upholstered with velvet and smelling of varnish. The cars are on rails, upon which they move, side on, as if by a principle of growth, the undeveloped ones perpetually pushing up their more forward predecessors, until the last perfect carriage is ejected from the fifteen-hundredth foot of the building's length. Each one, gathering material and ornament as it rolls steadily along in its crablike side-fashion, becomes at last a vehicle of perfect luxury; and then, with one final plunge into the open air, it leaves its diversely-destined neighbors, and changes for ever its sidelong motion for the forward roll which will carry it through a long existence. A very large proportion of this company's work is on "palace" cars of the Pullman type, those extravagances of luxury of which Europe is just now applying to Wilmington to learn the lesson. Narrow-gauge cars for the West, in supplying which they are the pioneers, gaudy cars for South America, and sturdy, solid ones for Canada, are all gently riding forward, side to side, in this inexorable chain of destiny, and diverging at the front door on their widely-different errands. Besides the manufacture of cars, the company builds every sort of coasters and steamers.