ms of Subscription.—One copy of the Scien- NATIONAL STEEL HAIMUS-COKLISS ENtJlNE tific American will be sent for one vear—b2 numbers- postage prepaid, to any subscriber in the United States TUBE CLEANER. Willi Ilal'ris* I'aleiited Iinproveineiits, f>' 10 to 1.000 H. 1>. or Canada, on receipt of… … ) 1883 SCIENTIFIC AMERICAN, INC
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