As it comes off the tenter the cloth goes through steel rollers and is pressed smooth, after which it is automatically folded and made ready for ticketing and packing. 5. THE KNITTING INDUSTRY [Sidenote: _History_] We have just seen by what processes cotton yarn becomes first gray cloth, and then finished goods. There is of course a tremendous variety of woven fabric, ranging all the way from the coarsest sail cloth to the finest organdie. And there are certain finishes such as velveteen and corduroy which, for want of space, we have not even touched upon. There is, however, a whole class of cotton fabric which is not woven but knit; and since most of our hosiery and underwear are made in this way, it behooves us to take at least a brief glance at the knitting industry. [Illustration: _Transferring Design to Copper Roller_] The principle of knitting is so familiar to every one who is or has a mother or wife that no description of it is necessary. Curiously enough, although the original stocking frame was invented as far back as 1589, power was applied to the industry for the first time at Cohoes, N. Y., in 1832. This city is still the centre of underwear manufacture in this country. [Illustration: _Cloth in Tenter-frame_] [Sidenote: _Two Types of Machines_] Knitting is now done on two general types of machines: the flat bed knitter, and the circular knitting machine. In the former the garment is knit in one flat piece and seamed afterwards. Underwear made in this way is described as full-fashioned. On the circular machine a seam is not necessary, for the complete cylinder of fabric is made at once. While it is possible to manufacture underwear on a circular frame, its use is far better adapted to the knitting of hosiery, and a very large industry for the manufacture of this product has grown up in and near Philadelphia. [Sidenote: _The Flat Bed Knitter_] The Cotton Knitting Frame, invented in 1864, is still the basis of the modern flat-bed knitter. The product is a flat web which can be widened or narrowed by transferring the loops from the edge needles to a separate instrument, and then replacing them. In knitting stockings, the shaped legs are made on one machine, then transferred to a heeler, and then to a third machine which knits the feet. The stockings then must be seamed up the back. The largest machines are capable of knitting twenty-four garments at one time. The advantage of this type is that it produces more elastic fabric, but it requires more operatives and more highly skilled labor than the circular machine. [Illustration: _Calendar_] [Sidenote: _The Circular Machine_]