“Winds are caused, either by the successive and regular addition of some foreign matter, or else by the re-union of a great quantity of water; and the differences of the winds may arise from the fact that some portions of this same matter fall into the numerous cavities of the earth, and are divided there.
“Hail is produced by an energetic condensation acting on the ethereal particles which the cold embraces in every direction; or, in consequence of a less violent condensation acting however on aqueous particles, and accompanied by division, in such a manner as to produce, at the same time, the re-union of certain elements and of the collective masses; or by the rupture of some dense and compact mass which would explain at the same time, the numerousness of the particles and their individual hardness. As to the spherical form of the hail, one may easily account for that by admitting that the shocks which it receives in every direction make all the angles disappear, or else that at the moment when the different fragments are formed, each of them is equally embraced on all sides by aqueous or ethereal particles.
“Snow may be produced by a light vapour full of moisture which the clouds allow to escape by passages intended for that end, when they are pressed, in a corresponding manner, by other clouds, and set in motion by the wind. Subsequently, these vapours become condensed in their progress under the action of the cold which surrounds the clouds in the lower regions. It may also be the case that this phænomenon is produced by clouds of a slight density as they become condensed. In this case the snow which escapes from the clouds would be the result of the contact, or approximation of the aqueous particles, which in a still more condensed state produce hail. This effect is most especially produced in the air. Snow, again, may result from the collection of clouds previously condensed and solidified; or from a whole army of other causes.
“Dew proceeds