Opposite Currents of Air

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“Suppose a b c to represent a portion of the earth’s surface a being towards the north pole, c towards the south pole...The currents of air are supposed to pass in the direction of the arrows. the wind, therefore, for a to b would blow on the surface of the earth, from north to south, while from e to a, the upper current would pass from south to north, untl it came to a, when it would change is direction towards the south.” -Comstock 1850


J. L. Comstock A System of Natural Philosophy: Principles of Mechanics (: Pratt, Woodford, and Company, 1850) 206


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