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Scientific American, Vol. 37, No. 14 (1877) (1877)
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-__A_- s 8 5 2 2 4-8 ke ee [ $3.20 per Annum. Vol. ¥XXVII.—No. said | [PosTAGE PREPAID.] : [NEW SERIEs.] i coil, B, is a soft iron disk, E. Finally THE NEW BELL TELEPHONE. … [Continued on page 212.) screws, D. In front of the pole and TELEPHONE. APPLICATIONS OF PROFESSOR BELL'S NEW © 1877 SCIENTIFIC AMERICAN, INCInternet Archive · Public domain (published before 1931). Free to use for anything.
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