e and lower pieces of The nitrate and the pyrolignite of iron are the proper blotting paper is filled with pulverized copper sul- wninal of the field magnet, the other terminal of which mordants for dark shades; these shades can be blued is connected with one of the pivotal wires of the com- phate,… … The field magnet is wound band about twice the INEXPENSIVE SIEMENS ELECTRIC MOTOR. with 64 feet of No. 25 mag- breadth of the hand. It net wire, 32 feet being should be put onin a layer wound on each arm of the magnet. Thearmature wind- All that is necessary to start the battery is to place so…
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