82 SCIENTIFIC AMERICAN, INC July 22, 1882.] Stimtxilt jkmmrm 55 was indicated by the red lining forming a sort of ribbonon the ground glass, which showed the exact direction theplan required to be moved to bring it into proper position. Coal Jigging In tlic Schuylkill Region. The Coal Trade Journal… … PHOTO BASS-RELIEFS. actuating a small pinion. The second is a counter, revolvingwith greater or less speed according to the resistance to beovercome by the engine, which resistance it records in kilo-grammeters or foot pounds, thus constituting a dynamo-metric indicator, analogous to gas and water…
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