ontracted that the Britain on the 9th of February a paper, by Archibald General Considerations.—1. A magnet Is a bar of products of combustion, smoke and gas, completely Smith, Esq., M.A., F.R.S., was read, " On the De- steel, the ends of which have opposite properties- choke them, so that all the… … with pipes, F G H, to The direction of the mag- DAYTON'S MOIST HOT-AIB FURNACE convey cold air as fast as netic force in London at that already heated es- present is the same as if there were a blue pole 20^-° The deviation of the compass is a subject of greaS capes. I to tha weBt of north, and 68°…
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