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Scientific American, Vol. 101, No. 10 (September 1909) (1909)

leaf 11

An illustration from Scientific American, Vol. 101, No. 10 (September 1909), 1909, leaf 11
GINE. to be pollenized. The plant was grown on a trellis HOW TO MAKE A SIMPLE DRT BATTERY. BY ROBERT H. BROCKMAN. about five feet high, but as the fruit- began to get very BY GEORGE P. WORTS. A simple electric engine may be made as follows: heavy, it had to be tied to the wire. In growing the Often… … w h e e 1 . A is A SIMPLE ELECTRIC ENGINE. the cylinder. Any solder showing on the inside is to THE GOURDS ARE TIED TO THE TRELLIS TO GIVE fastened to the be well shellaced. Do not shellac any zinc surface, shaft C. Any wheel of suitable size and weight can as that will interfere with the action of…

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