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Scientific American, Vol. 85, No. 2 (1901) (1901)

leaf 7

An illustration from Scientific American, Vol. 85, No. 2 (1901), 1901, leaf 7
nell, Restoring keyse eee Raging seyxoO 2 2 fae aed Yn a rae. —— of the disengaged plugs of the rear McBerty, and Carty. It is not the I ES or answering series in that answer- purpose of this article to dwell on Ringing “XXD 2 CO ing-jack and asks the number desired. the technical features of the… … “outgoing trunk - lines,” respond. When a conver:

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