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Scientific American, Vol. 84, No. 24 (June 1901) (1901)

leaf 7

An illustration from Scientific American, Vol. 84, No. 24 (June 1901), 1901, leaf 7
on of potassium stand the saving of time and great convenience in the them. At any point the maximum grid thickness, hydroxide. Each plate consists of a sheet of steel, after hydraulic pressure has been applied, is 0.024 inch, 0.024 inch in thickness, perforated so as to form a use of the… … corresponding with a normal discharge customary among the whites, is compelled to A CHINESE TELEPHONE CENTRAL OFFICE IN SAN FRANCISCO. period of 3% hours. At a high rate, how- call the names of the individual or firm ever, a cell can be discharged in about one hour. that is wanted, a feat of memory…

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