e, which does away with the use of the usual cords andpulleys on windows, by making one sash balance the other.It is cheap, readily applied, and will afford all the means forventilation that side weights do. A cord, Fig. 1, is attached to the center of the upper sash,by passing it, from beneath,… … The St, Gothard Tunnel, The length of this immensework will be 14,900 meters, or9 miles 715 yards. The alti-tude of the northern entrance,at Goeschenen, will be 3,703feet above the level of the sea,and that of the southern en-trance, 3,850 feet. The highestpoint in the interior of the tun-nel will…
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