In the Eastern tales of magicians one reads of a town being found one day where there was nothing but sand the day before. Here the fable is fact, and the potent magician is Steam. Here is, perhaps, the greatest temple that has ever been built to that great god of our day. Taking little note of its immense extent, of the vast walls which enclose it, like some fortress, of the tunnel which gives entrance, and through which three thousand workmen pass four times a day, let us enter at once and go straight to the manufacture of those wheels and tires and axles of which we have heard so much since the tragedy at Shipton. To look at a carriage-wheel, the iron carriage-wheel, one would imagine that it was all one piece, that it was stamped out at a blow, so little sign is there of a junction of parts. The very contrary is the fact: the wheel is made of a large number of pieces of iron welded together, and again and again welded together, till at last it forms one solid homogeneous mass. The first of these processes consists in the manufacture of the spokes, which are made out of fine iron. The spoke is made in two pieces, at two different forges, and by two distinct gangs of men. A third forge and a third gang are constantly employed in welding these two detached parts in one continuous piece, forming a spoke. One of these parts resembles a [T] with the downward stroke very short, and the cross stroke at the top slightly bent, so as to form a section of a curve. The other piece is about the same length, but rather thicker, and at its larger end somewhat wedge-shaped. This last piece forms that part of the spoke which goes nearest to the centre of the wheel. These two parts, when completed, are again heated to a red heat, and in that ductile state hammered with dexterous blows into one, which then resembles the same letter [T], only with the downward stroke disproportionately long. Eight or more of these spokes, according to the size of the wheel, and whether it is intended for a carriage, an engine, or tender, are then arranged together on the ground, so that the wedge-shaped ends fit close together, and in that position are firmly fixed by the imposition above them of what is called a 'washer,' a flat circular piece of iron, which is laid red-hot on the centre of the embryo wheel, and there hammered into cohesion. The wheel is then turned over, and a second 'washer' beaten on, so that the partially molten metal runs, and joins together with the particles of the spokes, and the whole is one mass. In the ordinary cart-wheel or gig-wheel the spokes are placed in mortise-holes made in a solid central block; but in this wheel before us, the ends of the spokes, well cemented together by the two washers, form the central block or boss. The ends of the spokes do not quite touch each other, and so a small circular space is left which is subsequently bored to fit the axle. The wheel now presents a curiously incomplete appearance, for the top strokes of