We try to explain all things by the action of wind and wave; yet in the air there is a force which is not the wind, and in the waters a force which is not the wave. That force, both in the air and in the water, is effluvium. Air and water are two nearly identical liquid masses, entering into the composition of each other by condensation and dilatation, so that to breathe is to drink. Effluvium alone is fluid. The wind and the wave are only impulses; effluvium is a current.