. The climate and weather of Baltimore . \ ^^ ^ / Fig. 12—Warm October. 1900 (-f ). D States. sobars, or lines of equal pressure. MARYLAND WEATHER. y Pm. 3.—Warm December of 1S89 {-f- ) i \ \ \ PiQ. 9.—Warm June of 1899 (-|. 2) rio. C—Warm March of 1898 (). D18TRIBDTION OF PressIRe, Winds and Tbmperatore Dorino Normal, Colo and Warm Seasons in the United States. Black llDes are isotherms, or lines of equal temperature. Red lines are isobars, or lines of equal pressu: Arrows fly with the wind. Pio. IJ Warm October. 190U (4 ). MARYLAND WEATHER SERVICE 471

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