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Show j Topography of the Air. I Explorations of the air have re- 1 vealed an astonlahlnK dcllnltcneps of nrranceiiieiit In Km layerx. nllhoiiKh, I of courae, the detnlla are contluuiill chancltis. Ley, In KiikIuiiiI, him dl- , reeled hla stiiilles of lluutlni; halloons 1 to a folutlon of the quehtlon of the Influence of the topoKraphy of the earth'K aurfuce on the atate of the air ahoo it. He flnd.H, nmoiiK other things, , that I he (llKturlinnccM produced by hllla ami viiIIcjh are traiiKtulttod to an tin- I expectedly jrreat elevnllon. affecting the lower, and nilthlle atritta throiiKh-out. throiiKh-out. A general effect noticed In tliat the velocity of tho wind, or of a current cur-rent of nlr, Is lncreaaed over a hill nnd diminished nvor n vnlle. it Is thouglit that almllar ohbervatlnna, nun-erallj nun-erallj distributed, would furnish us with it real topography of the ulr. Washington Ptnr. |