DELICACY OF THE TELEPHONE CIRCUIT.
In a recent lecture before the Society •of Telegraph Engineers in England, Professor Bell called attention to the Temarkably slight eartli connection which is needed to establish a circuit for the telephone. In describing an experiment showing this, he stated that while an assistant made connection at Ms end of the line by standing on a grass plot, he himself stood upon a wooden hoard. On trying the telephone Professor Bell was very much surprised to hear a continuous musical note uttered by his coadjutor, and looking for the cause he found that a single blade of grass was bent over the edge «o£ the board and that his feet touched it. The removal of the grass was followed by a cessation of sound from the telephone, but the sound became audible whenever the Professor touched •even the petal of a daisy with his foot.
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Kumara Times, Issue 441, 23 February 1878, Page 4
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150DELICACY OF THE TELEPHONE CIRCUIT. Kumara Times, Issue 441, 23 February 1878, Page 4
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