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immense average per head of fifty cubic feet, or three hundred and twelve gallons, per diem, — a consumption quite unequalled in modern times, except in the city of New York, where it is said to have formerly amounted nearly to this quantity. The aqueducts of Metz, Nismes, and Segovia are also striking examples of the attentioroton dam is constructed, the surface-water of the creek was about 38 feet lower than the elevation required as a head for the delivery of the water into the city of New York at a sufficient hight. By going farther up stream a dam of less hight would have been sufficient, but the supply of water would of course have been smaller.more was employed. The receiving reservoir is located between Sixth and Seventh Avenues and Seventy-ninth and Eightysixth Streets in the upper part of the city of New York. It is 1,826 feet long and 836 feet wide at the top of the external walls of the embankment, having a total area of 37 acres, the area of the water-surface
The project has lately been revived for impelling street-cars. Under Air as a means of transmitting power, has been noticed the attempt of Dr. Papin of Blois to run a pumping-engine by compressed air conducted by pipes from a condensing engine situated at the distance of a mile and driven by a fall of water. For some reason, friction and leakage probably, the doctor failed. For the application of compressed air as a water elevator, see Air as water elevator, compressed. In the city of New York, in 1858 or 1859, Captain Ericsson arranged a power to run sewing-machines for a clothing firm in that city. A caloric engine in the cellar compressed the air; it was carried to the upper story in pipes, and there moved little engines, which, in turn, operated sewing-machines to the number of some eighty. The act of compressing air throws off its heat, and then when it is again exhausted, it takes up that heat again from the surrounding atmosphere, doing two things, condensing and pre
s a furrow, and the grain is led in by a rubber tube, which conducts the seed from the hopper. The improved drills of the present day have hoppers attached for sowing grass-seed or fertilizers, and some have arrangements for sowing grain or corn broadcast. Wheat-drill ( Buckeye ). Fig. 7163 is a perspective view of Mast's wheat-drill (Springfield, O.). Fig. 7164 shows the force-feed wheel, one of which Plate LXXV. proposed wharfage, piers, and improved Harbor-front for the city of New York. is placed on the bottom of the hopper above each spout, to insure the feed and not depend upon the gravity of the grain. The feed is regulated from 1/2 bushel of wheat to 3 bushels of oats, without change of gears, by means of an adjustable rotary disk in the feed-cup, so arranged that all the feeders are set at once by merely moving the indicator at the end of the hopper. Buckeye drill force-feed. The hoes may be shifted from a double to a single bank, or vice versa; the fee