In the Southern Hemisphere, if the vortex passes to the westward of the place of observation, the rotation is S.E., N.W., S., with the sun. If the vortex passes to the eastward of the place of observation, the rotation is S.W., N.E., S., against the sun. On Hurricanes or Cyclones. Thus, in both Hemispheres, the passage of an equatorial whirlwind storm on the west side of the place of observation produces normal revolutions in accordance with the law of gyration; while, on the other hand, its passage on the east side produces anomalous revolutions contrary to the law of gyration. When the vortex of a whirlwind storm passes over the place of observation, the vane may shift from one direction to that immediately opposite to it. Generally, if the whirlwind storm is an equatorial one in the Northern Hemisphere, it progresses from S.E. to N.W. in the Torrid Zone; it recurves at the outer edge of the N.E. trade wind, and thence moves from S.W. to N.E. But in the Southern Hemisphere an equatorial storm moves first from N.E. to S.W.; recurves at the outer edge of the S.E. trade wind, and then advances from N.W. to S.E.—bearing in mind the direction of the rotation of the wind in each hemisphere, viz: against watch hands in the Northern, but with watch hands in the Southern Hemisphere. Certain portions of the storms are characterized by certain hurricane winds, and dividing the storm by diameters drawn from the northern to the southern margin, and again from the eastern to the western margin, we find that in the Northern Hemisphere, on the northern margin, the wind will be easterly; on the eastern margin, southerly; on the southern margin, westerly; and on the western margin, northerly;—each portion of the cyclone possessing its appropriate wind.