but does not move through a pure space; the sun, on the other hand, is situated in a transparent space, and one free from all admixture, preserving a well proportioned distance from us, on which account it gives us more light and more heat. And that the sun and moon are eclipsed, when the before-mentioned vessels are turned upwards. And that the different phases of the moon take place every month, as its vessel keeps gradually turning round. Moreover, that day and night, and months and years, and rains and winds, and things of that kind, all exist according to, and are caused by, the different evaporations.
For that the bright evaporation catching fire in the circle of the sun causes day, and the predominance of the opposite one causes night; and again, from the bright one the heat is increased so as to produce summer, and from the dark one the cold gains strength and produces winter; and he also explains the causes of the other phenomena in a corresponding manner.
But with respect to the earth, he does not explain at all of what character it is, nor does he do so in the case of the vessels; and these were his main doctrines.
VII. Now, what his opinion about Socrates was, and what expressions he used when he met with a treatise of his which Euripides brought him, according to the story told by Ariston, we have detailed in our account of Socrates. Seleucus, the grammarian, however, says that a man of the name of Croton, in his Diver, relates that it was a person of the name of Crates who first brought this book into Greece; and that he said that he wanted some Delian diver who would not be drowned in it. And the book is described under several titles; some calling it the Muses, some a treatise on Nature; but Diodotus calls it—
Some call it a science of