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LV. Rotating Earth-Inductor ivitlwut Sliding- Contacts. 

 By J. J. Taudin Chabot*. 



^f^HE solenoid of the earth-inductor is divided into two parts, 



A shown at a and a v Both these parts are mounted on an 



axis x or, the middle portion of which rests in a bearing which 



* Communicated by the Author. 



