The hand truck here illustrated is so constructed that it can be used as an elevator for loading boxes, sacks, and other heavy articles into wagons. In the inner sides of the upper part of the frame are formed CALDWELL'S NEW HAND TRUCK. grooves, in which slide bars of a frame, to the lower part of which are attached plates that overlap the side bars of the main frame. A toe is formed at the lower end of the plates. To the centers of the cross bars of the sliding frame is secured a rack bar, the teeth of which mesh with a pinion on a shaft driven by gearing operated by a crank handle at the side of the main frame. By properly turning the handle, the frame and its load can be raised, a pawl and ratchet wheel preventing the gearing from turning back. To the legs of the frame is hinged the forked upper end of a long leg, upon which the truck is supported when raised into an inclined position, so that the crank can be conveniently operated to raise the frame and load. When the load has been raised to the required height, it is held in place by the pawl, and can be placed in the 'Yagon by swinging the upper part of the truck forward upon the toe as a fulcrum. When not in use, the leg is held against the under side of the truck by a spring clamp. This invention has been patented by Mr. John Caldwell, P. O. box 87, Wilmington, Del. Woolen as ' a Sanitary Measure, A new philosophy of clothes is announced to the world under the title of Dr. Jaeger's Sanitary Woolen System, which seems already, after a trial of only four years, to have taken a strong hold upon many of the people of England and Germany, where the manufacture of the woolen fabrics and garments is conducted, subject to the scrupulous inspection of Dr. Jaeger himself, and conformably to his discoveries [and theories respecting it as a cure and preventive of disease. His claims in its behalf are broad and sweeping, and apparently extravagant. Nevertheless, his doctrine is rapidly gaining converts in both countries. The London Times speaks of it as having been adopted by some of “ our most eminent sanitary reformers, while in Germany it has not only revolutionized the trade of Stuttgart, where its founder practices, but the clothes are worn and highly appreciated by such men as Count Von Moltke, who may be expected to apply the principles in question to the German army." Everybody knows that almost everybody is the victim of some kind of ailment or infirmity; but hardly anybody would have suspected, till Dr. Jaeger revealed the results of his investigations and discoveries. that many of the ills that flesh is heir to are the effects of the “ material and form of the ordinary clothijig ot the present day.” But this is precisely what Dr. Jaeger claims to have proved, while he professes to have found a very general, though by no means a universal, remedy. It lies in the renunciation “of all material of vegetablefiber (linen or cotton) or silk in clothing and bedding,” and the substitution “ of clothing and bedding of animal wool throughout, so constructed as to afford to the body the maximum of protection from chill and damp, with the minimum of impediment to the escape of the exhalations from the skin." He rests his theory chiefly on the well known properties of wool, which make it a poor conductor of heat, while it is highly permeable and transmissive to the exhalations of the skin. The London Lancet calls this the” rallying point” of his system, and the Sanitary Record (London, Feb. 15, 1884), says: “The underclothing has been extensively worn since its introduction, and has received a general consensus of approval on its intrinsic merits." Any one curious to see these novel articles of clothing, from a collar to an overcoat, from a shoe to a necktie, and from chemise to shawl, will soon have an opportunity afforded them at 827-829 Broadway, where a large exhibition and salesroom is soon to be opened by the “ Dr. Jaeger Sanitary Woolen System Co.”