ontents of the furnace are enormous. Moreover, the the pioneer publication in that direction, and the intimately mixed, and subjected for 20 to 30 hours predecessor of the present ScIENTIFIC AMERICAN. installation of a glass-furnace is exceedingly costly; valuable space is taken up both below and… … are mounted immediately above the corresponding outward overhang of shearlegs, 35 feet 3 inches; hearths, B. Direct current generated by a 360-ampére height of top of shearlegs above water level, 50 feet. dynamo with a voltage of 120 is passed through thé The power needed is supplied by a vertical…
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