This Element is the Menstruum of the world, and is divided into three sorts, _viz._ pure, purer, and most pure. Of the most pure substance of it the Heavens are created, the purer is resolved into Aire, but the pure, plaine, and grosse remains in its sphere, and by divine appointment, and operation of Nature doth preserve and keep every thing that is subtile. It makes one globe together with the Earth: it hath also its Center in the heart of the Sea: it hath one axell tree and pole with the earth, by which all courses, and fountaines of water issue forth, which afterward increase, and grow up into great rivers. By these issuing forth of waters the Earth is preserved from burnings, and with this moistning the universall Seed is carryed forth through the pores of the whole Earth, which thing is caused through heat, and motion. Now it is manifest that all courses of Waters return into the heart of the Sea; but whither afterward they run is not known to every body. There be some that think that all rivers, water, and springs which have their course into the sea, do proceed from the stars, who, when they know no other reason why the sea should not increase, and bee fuller, by reason of them, say that these Waters are consumed in the heart of the sea. But this Nature will not admit of, as wee have shewed when we spake of the Rain. The stars indeed cause, but doe not generate Water; seeing nothing is generated but in its owne like of the same species: Now the Stars consist of Fire, and Aire; how then should they generate Waters? And if it were so, that some Starre should generate Waters, then necessarily also must others generate Earth, and also others other Elements: because this fabrick of the world is so upheld by the four Elements, that one may not exceed another in the least particle, but they strive one with the other in an equall ballance; for otherwise if one should exceed the other, destruction would ensue. Yet let every one persevere in what opinion hee please, it is thus shewed to us by the light of Nature, that this fabrick of the world is preserved by these four Elements, their equality being proportioned by the great God, and one doth not exceed the other in its operation. But the Waters upon the basis of the Earth are contained as it were in some vessell from the motion of the Aire, and towards the Articke pole are by it constringed, because there is no _vacuum_, or vacuity in the world: for this cause is there in the Center of the Earth the fire of hell, which the Archeus of Nature doth govern.