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Updated: May 1, 2025
L'Electricien. REMOVAL OF INK FROM HECTOGRAPH. It is recommended in Südd. Ap. Ztg. to pour crude hydrochloric acid upon the hectograph, rub with a wad of cotton, then wash off by holding under cold running water and drying with a cloth. The hectograph may be used again immediately.
This plant will be in itself a very interesting exhibit. It is proposed to provide a capacity for evaporating not less than 440,000 pounds of water per hour. AN INTERESTING little plant in which the rise and fall of the tides is used as motive power for the generation of electricity is described in L'Electricien.
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