tric wave used in transmitting the sounds being generated We have already laid before our readers accounts of the and I is an adjusting screw by which the end, H, may be wonderful performances of Professor Bell's telephone, an by the voice itself. The construction of the instrument placed as… … sented a number tempted. PROFESSOR . A. GRAHAM BELL'S TELEPHONE.-Fig. 1. of telephones con- In the telephone nected together, which we illustrat- 2 and 4. A, Fig 2, is a plate of iron or steel which is different station, the sta- each one, for instance, at a ed recently m- fastened to the sounding…
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