. Electric railway journal . t; but excessive heating at all timesimpairs the life of the battery. The watt-hour efficiency rangesfrom 60 per cent to 65 per cent. The smaller battery givesabout 14 watt-hours per pound of cell, and the larger cell 16watt-hours. The manufacturer lays stress on the claims that thebattery cannot be injured by overcharging; it does not deterio-rate when left discharged; any cell can be removed simply bydetaching the connections from the poles, and the battery hasnearly twice the output or mileage of other batteries weight forweight. CATENARY WITH FEEDERS FOR MESSEN
. Electric railway journal . t; but excessive heating at all timesimpairs the life of the battery. The watt-hour efficiency rangesfrom 60 per cent to 65 per cent. The smaller battery givesabout 14 watt-hours per pound of cell, and the larger cell 16watt-hours. The manufacturer lays stress on the claims that thebattery cannot be injured by overcharging; it does not deterio-rate when left discharged; any cell can be removed simply bydetaching the connections from the poles, and the battery hasnearly twice the output or mileage of other batteries weight forweight. CATENARY WITH FEEDERS FOR MESSENGERS An account was published in the Electric Railway Journal,for May 22, 1909, of a proposed method of catenary construc-tion to be employed on the Rochester, Syracuse & EasternRailroad. The chief feature of novelty in this constructionwas the use of the .regular copper feeder cables for messengerwires, thus dispensing with the usual steel messenger the publication of that article a section of this line has. Catenary with Feeders for Messengers been built by the Rochester, Syracuse & Eastern Railroad, andis illustrated in the accompanying engraving. The feeders are of 500,000 cir. mil section and are carriedon the cross girders of the bridges in porcelain saddle insula-tors, which are lagged to a kyanized spruce timber 4 in. x 6 in. x18 in. mounted on the top member of the girder. The bridgesare spaced every 300 ft. on straight track, the same distance aswhen steel messengers were used, and the hangers are 30 , or 10 to each messenger span. It is estimated the cost^is reduced about $400 per mile over that with steel yet no objectionable features have developed. The Rochester, Syracuse & Eastern Railroad Company builtthe foundations and installed the bridges, which were designedand furnished by the Archbold-Brady Company, of Ohio Brass Company supplied the saddle insulators. TOOTH FOR ICE PLOWS At this season of the year considera
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