File:Scientific American Volume 65 Number 20 (November 1891) (1891) (14596200089).jpg

Identifier: scientific-american-1891-11-14 (find matches)
Title: Scientific American Volume 65 Number 20 (November 1891)
Year: 1891 (1890s)
Authors:
Subjects: scientific electric steam american engine shaft munn adapted scientific american patent express money electric lighting horse power illustration represents gas engine flat iron electric mining electric light american supplement
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se case occurs, but it cannot be assumed as theuniversal and sole cause of the phenomena. Electric Cars inBoston. At the recent meetingof the American StreetRailway AssociationMr. Pearson of Bostonsaid his road has about350 cars equipped withelectric motors. Theexpense of operationwith horses is about 25cents per car mile, in-cluding everythingconnected with the op-eration, fixed chargesand the track repairs.In Boston the cost ofoperation is quite highas compared with someother cities. You willfind in many cities the cost of operation of horse cars is below 25 cents,but we pay a good price for labor, on account of therunning of our lines in the congested parts of the city,where we cannot get as much work out of a man asyou can in other cities. This makes a greater cost ofoperation. The cost of operation with electric motorsup to the present has been about 20 cents per car mile.The increased cost of operation in our city is also trueto a great extent with electricity. We pay 25 cents a
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THE TWIN-SCREW STEAM LAUNCH GEMINI. ft. over all ; that is the car we have adopted as ourstandard. For our purpose we find a decided improve-ment in earnings and saving in operating expenses perpassenger with the long car. I imagine that the con-ditions in Boston determine that for us, and in othercities it may be that the shor,t car would be nionsprofitable for operation. We find the long car earns agreat deal more per car mile, and we need only thesame number of men to operate it as with the short Horse Chestnuts and Acorns as Human Food. At the recent Congress of German Naturalists andPhysicians, P. Soltsien (Chemiker Zeitung) recom-mended the use of ammonia at 10 per cent, as a suita-ble agent for removing tannin and poisonous alkaloids. Horse chestnuts andacorns must be pre-viously comminuted.As lupins contain nostarch, it should beadded to the purifiedproduct in the shape ofground acorns. The at-tempts at utilizing horsechestnuts (essentially re-moval of sapotoxine) arenot very

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