The credit for improving the power-loom so as to adapt it for weaving fancy cassimeres and suitings, belongs to William Crompton, a native of England, who came to the United States in 1836, and shortly thereafter, in the Middlesex Mills at Lowell, Mass., constructed and operated the first fancy cassimere power-loom, not only in this country, but in the world. Prior to this the harness for all woolen and worsted power-looms was worked by cams, and the cloth was woven plain; but Crompton’s loom of 1840 started a new era in the woolen industry, rendering it possible to produce any fancy weave by an arrangement of pattern chain and large number of harnesses in connection with the change shuttle-boxes. Improvements followed, by the substitution of the reverse shuttle-box motion in 1854, the perfection of the general loom structure in 1857, the addition of the upright lever harness motion in 1864, and the centre-stop in 1879, so that at the present time this machine is adapted to run at high speeds and weave at moderate cost the most complicated designs in woolen and worsted—such as shawls, checks, suitings, and all forms of fancy cassimeres. The general industrial activity in all matters pertaining to textile manufacture between the years 1835 and 1860, brought forth many forms of looms of special adaptation to meet the increasing demands of society. The narrow-ware loom appeared in the third decade of this century, and the addition of the dobbie, or Jacquard, later, equipped this loom for the simultaneous production of several ribbons, or narrow fabrics, side by side, having plain or figured effect. The lay was divided into several reed spaces, and a corresponding number of shuttles, operated by rack and pinion, carried the weft-threads through the adjacent warp. About the middle of this century, and until the adoption of the more rich and delicate fabrics, hair-cloth was the accepted covering for furniture, and power-looms for its production quickly answered the demand. They reached such a degree of perfection and efficiency in this country that almost the entire industry was centred here. This fabric was made from the hair of horses’ tails as weft, and a strong cotton warp; and as the weft could not be wound upon bobbins, as usual, each separate hair was inserted by an ingenious device made to reciprocate through the shed, and select one out of a bundle of hairs cut to the same length. The conception of a power device capable of the delicate operation necessary to weave hair-cloth, could never have been realized except in a highly intelligent manufacturing community; but in 1870, Rhode Island alone produced on such machines over 600,000 yards, consuming thereby the hair of about eight hundred thousand horse-tails. [Illustration: CIRCULAR LOOM.]