The wind is ubiquitous.
It is certainly not meant by this that the winds never move in zones. Nothing is better established than the existence of those continuous air currents; and aerial navigation by means of the wind boats, to which the passion for Greek terminology has given the name of “aeroscaphes,” may one day succeed in utilising the chief of these streams of wind. The regular course of air streams is an incontestable fact. There are both rivers of wind and rivulets of wind, although their branches are exactly the reverse of water currents: for in the air it is the rivulets which flow out of the rivers, and the smaller rivers which flow out of the great streams instead of falling into them. Hence instead of concentration we have dispersion.
The united action of the winds and the unity of the atmosphere result from this dispersion. The displacement of one molecule produces the displacement of another. The vast body of air becomes subject to one agitation. To these profound causes of coalition we must add the irregular surface of the earth, whose mountains furrow the atmosphere, contorting and diverting the winds from their course, and determining the directions of counter currents in infinite radiations.
The phenomenon of the wind is the oscillation of two oceans one against the other; the ocean of air, superimposed upon the ocean of water, rests upon these currents, and is convulsed with this vast agitation.
The indivisible cannot produce separate action. No partition divides wave from wave. The islands of the Channel feel the influence of the Cape of Good Hope. Navigation everywhere contends with the same monster; the sea is one hydra. The waves cover it as with a coat of scales. The ocean is Ceto.
Upon that unity reposes an infinite variety.
IV
TURBA TURMA
According to the compass there are thirty-two winds, that is to say, thirty-two points. But these directions may be subdivided indefinitely. Classed by its directions, the wind is incalculable; classed by its kinds, it is infinite. Homer himself would have shrunk from the task of enumerating them.