such as is met with-in telephony where the the question of the transmission of electrical waves. ductors for long-distance telephony, and the researches overtones of the voice are present, then, if the approx- in his laboratory have been marked with great success, To one prong of atuning fork… … tion, and for the constant of at- eable 250 miles in length, having tenuation there is a mathematical the equivalent resistance and ca- instruments at elther end, expression in which the induc- pacity. To construct such a cable tance, resistance, and capacity of was a task of much labor and
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