hip in battle. to one or the other of the magnets, according to the upon as a piano keyboard, was placed at his command. The weight of this huge block of steel is 30 tons, and one the current is caused to pass through. Air pressure In the illustrations accompanying this article we show the rough… … the other magnet, and draws the armature to the right. forms the subject of this article. Within a wind chest Le Creusot, France. The ingot was worked to a dia- The bellows under the influence of thespring shown in a hollow cored electro-magnet, indicated by B, is meter of about 64 feet, then…
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