THE WIND THEORY OF OCEANIC CIRCULATION IN RELATION TO CHANGE
OF CLIMATE.
Direction of Currents depends on Direction of the Winds.—Causes
which affect the Direction of Currents will affect
Climate.—How Change of Eccentricity affects the Mode
of Distribution of the Winds.—Mutual Reaction of Cause
and Effect.—Displacement of the Great Equatorial
Current.—Displacement of the Median Line between the Trades,
and its Effect on Currents.—Ocean-currents in Relation to the
Distribution of Plants and Animals.—Alternate Cold and Warm
Periods in North and South.—Mr. Darwin’s Views quoted.—How
Glaciers at the Equator may be accounted for.—Migration
across the Equator 226