And it seems a just Authority for our Search, that some things are so plac'd in Nature by a Chain of Causes and Effects, that upon a diligent Search we may find out what we look for: To search after what God has in his Sovereignty thought fit to conceal, may be criminal, and doubtless is so; and the Fruitlesness of the Enquiry is generally Part of the Punishment to a vain Curiosity: but to search after what our Maker has not hid, only cover'd with a thin Veil of Natural Obscurity, and which upon our Search is plain to be read, seems to be justified by the very Nature of the thing, and the Possibility of the Demonstration is an Argument to prove the Lawfulness of the Enquiry. The Design of this Digression, is, in short, That as where Nature is plain to be search'd into, and Demonstration easy, the Philosopher is allow'd to seek for it; so where God has, as it were, laid his Hand upon any Place, and Nature presents us with an universal Blank, we are therein led as naturally to recognize the Infinite Wisdom and Power of the God of Nature, as _David_ was in the Texts before quoted. And this is the Case here; the Winds are some of those Inscrutables of Nature, in which humane Search has not yet been able to arrive at any Demonstration. 'The Winds,' _says the Learned Mr._ Bohun, 'are generated in the Intermediate Space between the Earth and the Clouds, either by Rarefaction or Repletion, and sometimes haply by pressure of Clouds, Elastical Virtue of the Air, &c. from the Earth or Seas, as by Submarine or Subterraneal Eruption or Descension or Resilition from the middle Region.' All this, though no Man is more capable of the Enquiry than this Gentleman, yet to the Demonstration of the thing, amounts to no more than what we had before, and still leaves it as Abstruse and Cloudy to our Understanding as ever. Not but that I think my self bound in Duty to Science in General, to pay a just Debt to the Excellency of Philosophical Study, in which I am a meer Junior, and hardly any more than an Admirer; and therefore I cannot but allow that the Demonstrations made of Rarefaction and Dilatation are extraordinary; and that by Fire and Water Wind may be rais'd in a close Room, as the Lord _Verulam_ made Experiment in the Case of his Feathers. But that therefore all the Causes of Wind are from the Influences of the Sun upon vaporous Matter first Exhal'd, which being Dilated are oblig'd to possess themselves of more Space than before, and consequently make the Particles fly before them; this does not seem to be a sufficient Demonstration of Wind: for this, to my weak Apprehension, would rather make a Blow like Gun-Powder than a rushing forward; at best this is indeed a probable Conjecture, but admits not of Demonstration equal to other Phænomena in Nature.