of his Meteors) the one hot and moist, as is the Aire and Water, potentially; this which is properly called Vapour; the other hot and dry, of the nature and power of fire, called Exhalation. The first resolves into water, as raines, snowes, hailes, mists, fogges, and other such moist impressions as are formed of this vapour, in the middle Region of the Aire, for being grosse and heavy, they cannot mount higher, but afterwards being thickned, and congealed by the cold that resides there, they fall backe here below, more materiall then those which were not mounted from thence, and at last, all do resolve into water. The second, called Exhalation, is subdivided into three kindes; the first, more viscous, grosse, and heavy, is that whereof your fires are formed, which are called _Castor_ and _Pollux_, otherwise _Saint Herme_; the _foole fires_, and the like, which cannot mount higher then the low Region of the Aire: the second is a little lighter, more subtill, and depured, penetrating even to the middle Region, where thunders and lightnings are formed, the wandring starres, _barres_ of fire, _cheurons_, and other such inflamations. The third, is yet more dry and light, and more free from unctuosity, almost of the nature of that Quintessence, which we observe in _Aqua vitæ_ soveraignly depured: therefore it may mount not onely to the highest Region of the Aire, and that of Fire contiguous; but escape yet whole and safe higher then the Heaven, with which, for its greatest subtilty and depuration which it hath gotten in this long way, it hath a great conformity: For being come to the Globe of the Sun, it is there perfected to concoct and to digest into a pure and cleare light; for the nourishment, as well of it selfe, as of other starres; the same that _Pliny_ toucheth in the 8 and 9 chapters of his second booke: So that the Starres receive all their light and nourishment from the Sunne, after that it hath been there concocted and fitted, and not by the forme of reflexion, as from its raies, which would lessen themselves either in water, or in a looking Glasse; for all that which participates of fire, hath need of nourishment. This is done as in the Animall, where the most pure bloud, comes from the Liver to empty it selfe through the Arteries into the heart which conducts it to its last perfection for the nourishment of Spirits. But this must be understood, if these Exhalations and vapours finde issue atwhart the pores and spongiosities of the Earth, to evaporate upwards. But if peradventure it meet with Tuffe, or Sand, or the like lets, and hindrances, which do contradict them, or let them, they stay there and wax thicke, for procreation of minerals: that is to say, a hot and a dry exhalation, in the nature of Brimstone, and a moist vapour in the nature of Quicksilver; not vulgar, but a substance yet spirituall and full of fume, from the assembling of which two, in a subtill vapour, they come to procreate in themselves afterwards by a