History, theory, and practice of the electric telegraph (1866)
Prescott, George B.(George Bartlett),1830-1894 · Boston, Ticknor and Fields · leaf 326
its centre; and hence the ideaof electric currents circulating in this solid envelope, and form-in°- a solenoid more or less complicated, appears to him mostnatural. But whence arise these currents, and what is the causeby which their direction is determined? In order to explainatmospheric… … velopment of electricity should give rise to currents circulatingfrom east to west. This direction must evidently be connectedwith the movement of rotation of the earth, which takes placefrom west to east; and consequently it is only in the existenceof induced currents, arising from a magnetic…
Telegraph
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