l place them easily within your reach I cents. To be had at this office and from all newsdealers. Complete List of Patents each week. in any State or Territory if you will invest one cent in a postal card and write to us, mentioning the Scientific Terms of Subscription.—One copy of the Scien-… … In quality and density of metal, TpOLS FOR EMERY WHEELS. Useful Arts, embracing Biology, Geclogy, Mineralogy, LIGHTNING CONDUCTORS.—DESORIP- in uniformity of temper, and in ac- Natural History, Geonraphy, Archaeology. Astronomy, Fie. 3. tiot&of anew form of apparatus fortesting lightning con-…
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