Puppeteer hands with matching wrist watches push marionette phone cords into their places on the stage of the  téléphone   grille , so that the talkers hidden in the cords can play their momentary part in the great paid drama that this  électrique  theatre creates with and among the voices of humanity.     Cet été-là à Londres, la compagnie du télégraphe avait commencé à se moderniser.