Nature is destitute of those views which actuate man; she acts necessarily, because she exists: her system is immutable, and founded upon the essence of things. It is the essence of the seed of the male, composed of primitive elements, which serve for the basis of an organized being, to unite itself with that of the female; to fructify it; to produce, by this combination, a new organized being; who, feeble in his origin, not having yet acquired a sufficient quantity of material particles to give him consistence, corroborates himself by degrees; strengthens himself by the daily accretion of analogous matter; is nourished by the modifications appropriate to his existence: matured by the continuation of circumstances calculated to give vigour to his frame; thus he lives, thinks, acts, engenders in his turn other organized beings similar to himself. By a consequence of his temperament and of physical laws, this generation does not take place, except when the circumstances necessary to its production find themselves united. Thus this procreation is not operated by chance; the animal does not fructify, but with an animal of his own species, because this is the only one analogous to himself, who unites the qualities, who combines the circumstances, suitable to produce a being resembling himself; without this he would not produce any thing, or he would only give birth to a being who would be denominated a monster, because it would be dissimilar to himself. It is of the essence of the grain of plants, to be impregnated by the pollen or seed of the stygma of the flower; in this state of copulation they in consequence develope themselves in the bowels of the earth; expand by the aid of water; shoot forth by the accession of heat; attract analogous particles to corroborate their system: thus by degrees they form a plant, a shrub, a tree, susceptible of that life, filled with that motion, capable of that action which is suitable to vegetable existence. It is of the essence of particular particles of earth, homogeneous in their nature, when separated by circumstances, attenuated by water, elaborated by heat, to unite themselves in the bosom of mountains, with other atoms which are analogous; to form by their aggregation, according to their various affinities, those bodies possessing more or less solidity; having more or less purity, which are called diamonds, chrystals, stones, metals, minerals. It is of the essence of exhalations raised by the heat of the atmosphere, to combine, to collect themselves, to dash against each other, and either by their union or their collision to produce meteors, to generate thunder. It is of the essence of some inflammable matter to gather itself together, to ferment in the caverns of the earth, to increase its active force by augmenting its heat, and then explode, by the accession of other matter suitable to the operation, with that tremendous force which we call earthquakes; by which mountains are