It is in the state in which, if the machinery were to stop here, as it did upon its first invention, it would require (having been wound upon a reel) to be parted and dried as hand-made paper is. But in a few seconds more it is subjected to a process by which all this labour and time is saved. From the last pair of cloth-pressing rollers, the paper is received upon a small roller which is guided over the polished surface of a large heated cylinder. The soft pulp tissue now begins to smoke; but the heat is proportioned to its increasing power of resistance. From the first cylinder, or drum, it is received upon a second, considerably larger, and much hotter. As it rolls over this polished surface, we see all the roughness of its appearance, when in the cloth region, gradually vanishing. At length, having passed over a third cylinder, still hotter than the second, and having been subjected to the pressure of a blanket, which confines it on one side, while the cylinder smooths it on the other, it is caught upon the last roller, which hands it over to the reel. The last process of the machine is to cut the roll of paper into sheets. [Illustration: Various processes of Bookbinding.] In consequence of the cheaper production of the press, and the consequent extension of the demand for books, bookbinding has become a large manufacture, carried on with many scientific applications. We have rolling-machines, to make the book solid; cutting-machines, to supersede the hand-labour of the little instrument called a plough; embossing machines, to produce elaborate raised patterns on leather or cloth; embossing presses, to give the gilt ornament and lettering. These contrivances, and other similar inventions, have not only cheapened books, but have enabled the publisher to give them a permanent instead of a temporary cover, ornamental as well as useful. There are eleven thousand bookbinders now employed, of which one-third are females. The number employed has been quadrupled by these inventions. In 1830, the journeymen bookbinders of London opposed the introduction of the rolling-machine. Books were formerly beat with large hammers upon a stone, to give them solidity. The workmen were relieved from the drudgery of the beating-hammer by the easy operation of the rolling-machine. They soon discovered the weak foundation of their objection to an instrument which, in truth, had a tendency, above all other things, to elevate their trade, and to make that an art which in one division of it was a mere labour. If the painter were compelled to grind his own colours and make his own frames, he would no longer follow an art, but a trade; and he would receive the wages of a labourer instead of the wages of an artist, not only so far as related to the grinding and frame-making, but as affecting all his occupations, by the drudgery attending a portion of them. [Illustration: Papyrus.]