and that now their movement continues in consequence of their heat, as the fire naturally proceeds onwards in order to seek the aliment which suits it.
“The intertropical movements of the sun and moon may depend, either on the obliquity impressed by fate on the heaven at certain determined epochs, or on the resistance of the air, or on the fact that these ignited bodies stand in need of being nourished by a matter suitable to their nature, and that this matter fails them; or finally, they may depend on the fact of their having originally received an impulse which compels them to move as they do describing a sort of spiral figure. The sensible evidence does not in the least contradict these different suppositions, and all those of the same kind which one can form, having always a due regard to what is possible, and bringing back each phænomenon to its analogous appearances in sensible facts, without disquieting one’s self about the miserable speculations of the astronomers.
“The evacuations and