a high pressure cylinder. The exhaust port from may be easily driven into it and carted to a special surfaces. this cylinder is connected with similar inlet ports of an ‘*studio cage” at another end of the building. Draw- —>+O> > intermediate cylinder, and the exhaust port from this ings from life… … gallons, but in seven large towns in the north (Lille, and English), one year. .............. ce eee rece ee cece wees 3.0) Boulogne-sur-Mer, Dunkirk, Caen, Calais, Roubaix, COMBINED RATES. and Turcoing) it averages only 6 gallons. Another The Scientific American and Supplement..... .. ...........…
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