he drew from his pocket a tiny instrument which he placed against his ear. Ozma, observing this action in her Magic Picture, at once caught up a simi… - L. Frank Baum

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he drew from his pocket a tiny instrument which he placed against his ear. Ozma, observing this action in her Magic Picture, at once caught up a similar instrument from a table beside her and held it to her own ear. The two instruments recorded the same delicate vibrations of sound and formed a wireless telephone, an invention of the Wizard. Those separated by any distance were thus enabled to converse together with perfect ease and without any wire connection.