American telegraphy and encyclopedia of the telegraph; systems, apparatus, operation (1909)
Maver, William, jr. [from old catalog] · New York, Maver publishing company · leaf 31
ces the hydrogen of the sulphuric acid, forming sul-phate of zinc; the hydrogen thus released attacks a molecule of the copper sulphate,displacing the copper of the sulphate, and forming with the suli)hur and oxygen ofthe sulphate, sulphuric acid, which unites with a newly formed oxide of zinc,… … place throughout the cell, or until the copper plate is reached, the result being that the hydrogen is not set free, but, instead, an atom of pure copper is deposited on the copper plate of the cell. The chemical action that occurs in the gravity cell on closed circuit may be considered the same as…
Telegraph
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