And beside, what likely cause can we conceive of this condensation, unlesse there be such qualities there, as there are in our ayre, and then why may not the Planets have the like qualities, as our earth? and if so, then ’tis more probable that they are made by the ordinary way of nature, as they are with us, and consist of exhalations from the bodies of the Planets. Nor is this a singular opinion; but it seemed most likely to _Camillus Gloriosus_, _Th. Campanella_, _Fromondus_,[1] with some others. But if you aske whither all these exhalations shall returne, I answer, every one into his owne Planet: if it be againe objected,[2] that then there will be so many centers of gravity, and each severall Planet will be a distinct world; I reply, perhaps all of them are so except the Sunne, though _Cusanus_ thinkes there is one also, and later times have discovered some lesser Planets moving round about him. But as for _Saturne_, he hath two Moones on each side. _Jupiter_ hath foure, that incircle his body with their motion. _Venus_ is observed to increase and decrease as the Moone. _Mars_, and all the rest, derive their light from the Sunne onely. Concerning _Mercury_, there hath beene little or no observation, because for the most part, he lies hid under the Sunne beames, and seldome appeares by himselfe. So that if you consider their quantity, their opacity, or these other discoveries, you shall finde it probable enough, that each of them may be a severall world. But this would be too much for to vent at the first: the chiefe thing at which I now ayme in this discourse, is to prove that there may be one in the Moone. [Sidenote 1: _De Comet. l. 5. c. 4._ _Apolog._ _Meteor. l. 3. c. 2. Art. 6._] [Sidenote 2: _Iohan. Fabr._ _Carolus Malaptius de Heliocyc._ _Scheiner. Rosa Vrsina._] It hath beene before confirmed that there was a spheare of thicke vaporous aire encompasing the Moone, as the first and second regions doe this earth. I have now shewed, that thence such exhalations may proceede as doe produce the Comets: now from hence it may probably follow, that there may be wind also and raine, with such other Meteors as are common amongst us. This consequence is so dependant, that _Fromondus_[1] dares not deny it, though hee would (as hee confesses himselfe) for if the Sunne be able to exhale from them such fumes as may cause Comets, why not then such as may cause winds, and why not such also as cause raine, since I have above shewed, that there is Sea and Land as with us. Now raine seemes to be more especially requisite for them, since it may allay the heate and scorchings of the Sunne, when he is over their heads. And nature hath thus provided for those in _Peru_, with the other inhabitants under the line. [Sidenote 1: _De meteor. l. 3. c. 2. Art. 6._] But if there be such great, and frequent alterations in the Heavens, why cannot wee discerne them? I answer: