This hand vise may be applied to a number of uses, and among others it may be readily converted into a haft or handle for any kind of tailed or shanked tool, such as files, wrenches, olive bits, chisels, or screwdrivers, and may also serve as pincers or nippers. It is of very simple construction. * * * * * THE MOUND-BUILDERS IN COLORADO. New evidence of the existence of the Mound-Builders in the mountain ranges of Colorado, similar to those in Montana, Utah, and Nevada, have recently been discovered by Mr. C.A. Deane, of Denver. He found upon the extreme summit of the snow-range structures of stone, evidently of ancient origin, and hitherto unknown or unmolested. Opposite to and almost north of the South Boulder Creek, and the summit of the range, Dr. Deane observed large numbers of granite rocks, and many of them as large as two men could lift, in a position that could not have been the result of chance. They had evidently been placed upright in a line conforming to a general contour of the dividing ridge, and frequently extending in an unbroken line for one or two hundred yards. The walls and the mounds are situated three thousand feet above the timber line. It is, therefore, hardly supposable that they were built for altars of sacrifice. They were not large enough for shelter or defense. The more probable supposition is that, like the large mounds in Montana and elsewhere, they were places of sepulture. * * * * * THE WOVEN-WIRE MATTRESS. Most of our readers who attended the last Fair of the American Institute, will recall an article in the furniture department, which attracted much attention on account of its novelty and utility. We refer to the wire mattress, or bed, manufactured by the Woven Wire Mattress Company, of Hartford, Conn. To the ordinary mind a new invention is interesting or not, in proportion to the probability of its coming into every-day use, and many a good housewife lingers in admiration over an improved sewing machine or cooking stove, to whom a new steam engine has no attraction. For this reason it was that the wire mattress was sat on and lain on by the numerous visitors at the Fair. [Illustration] The engraving presented herewith will give the reader, who has not seen the article, a good idea of its appearance. It consists of a fabric represented below, half an inch thick, composed of fine wire springs, each one the length of the bed; all the three hundred spirals, being so woven and braided together, in a double "weave," by machinery, that a sort of wire cloth is produced. It differs from any other material hitherto made, in that it has great strength and elasticity. There is, in fact, no other device, except the air or water bed, which can compare with it in its elastic properties. [Illustration]