. Usine et la gestion industrielle. VPSILANTI POWER HOUSE, D., Y. et A. A. de fer. Un autre point intéressant est le Michigan road, StreetRailway Houghton County situé dans la région des mines de cuivre de la péninsule supérieure.La ligne est^ 16 miles de long et est construit sur un droit privé emprises. Il s'étend de Houghton à Calumet et le carcajou et servesa population totale de 51 000. Les lignes interurbaines sont en voie simple withturnouts à propos de deux milles. Coupes sont évités, les liens étant laidon un talus qui n'est en aucun lieu moins de trois pieds au-dessus de la campagne environnante leniveau, ce

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. Factory and industrial management. VPSILANTI POWER HOUSE, D., Y. & A. A. RAILWAY. Another interesting Michigan road is the Houghton County StreetRailway, located in the copper mining region of the Upper Peninsula.The line is 16^ miles in length and is constructed on a private right ofway. It extends from Houghton to Calumet and Wolverine and servesa total population of 51, 000. The interurban lines are single track withturnouts about two miles apart. Cuts are avoided, the ties being laidon an embankment which is in no place less than three feet above thelevel of the surrounding country, this precaution being necessary inorder to avoid snow-drifts. As a further measure the equipment in-cludes a rotary snow-plow, three Taunton heavy-nosed plows, andthree snow-scrapers. Railway tracks are cleared by five wooden tres-. ?J bo ^ 5 877 THE ENGINEERING MAGAZINE. ties, the maximum grade being 7^2 per cent. The roadway is laidthroughout with 60-pound T-rails on cedar ties. The company oper-ates sixteen closed cars having straight sides and vestibules with fold-ing doors, and, because of their length equipped with trolley poles ateach end. On account of the shortness of the summer season, no sum-mer cars are used, but the windows of the closed cars are wide and low.The business of this road has been very large and in order to handlethe summer travel it is probable that some of the rolling stock will beequipped with multiple train-control apparatus so that two-car trainsmay be operated. The power house is located at Hancock, where coalmay be received at the companys dock. The power-house equipmentconsists of a Westinghouse 500 kilowatt, railway generator, a 500-kilo-watt, 25-cycle alternator, and a 250-kilowatt rotary converter with twoother converters of the same size at sub-stations. In the state of Mic

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