Those who have spent all their time in the learning and searching out the myste∣ries of Naturall Philosophie, would have all men thinke and beleeve, that the foure Elements have such mutuall sympathy, that they may bee changed each into other; so that they not onely undergoe the alterations of the first qualities which are heate, coldnesse, drynesse and moisture, but also the mutation of their proper substances by rarefaction and condensation. For thus the fire is frequently changed into ayre, the ayre into water, the water into aire, and the water into earth; and on the contrary, the earth into water, the water into aire, the aire into fire; because these 4. first bo∣dies have in their common matter enjoyed the contrary and fighting, yet first and principall qualities of all.
Whereof we have an example in the Ball-bellowes brought out of Germany, wch are made of brasse, hollow and round; and have a very small hole in them, whereby the water is put in, and so put to the fire; the water by the action thereof is rarified into aire, and so they send forth winde with a great noyse, and blow strongly as soone as they grow throughly hot. You may try the same with Chesnuts, which cast whole and undivided into the fire, presently fly asunder with a great cracke; be∣cause the watry and innate humidity turned into winde by the force of the fire, forcibly breakes his passage forth. For the aire or winde raised from the water by rarifaction, requires a larger place, neither can it now bee conteined in the narrow filmes, or skinnes of the Chesnut, wherein it was formerly kept. Iust after the same manner Gunpouder being fiered, turnes into a farre greater proportion of ayre, according to the truth of that Philosophicall proposition, which saith, Of one part of earth, there are made ten of water; of one of water, ten of aire; and of one of aire are made ten of fire. Now this fire not possible to be ••ent in the narrow space of the peice, wherein the pouder was formerly conteined, endeavours to force its passage with violence, and so casts forth the Bullet lying in the way, yet so that it presently vanishes into aire, and doth not accompany the Bullet to the marke, or object, which it batters, spoiles and breakes asunder. Yet the Bullet may drive the obvious aire with such violence, that men are often sooner touched therewith than with the bullet, and dye by having their bones shattered and broken without any hurt on the flesh which covers them; which as wee formerly noted, it hath com∣mon with Lightning. We finde the like in Mines, when the pouder is once fiered, it remooves and shakes even mountaines of earth.
In the yeare of our Lord 1562 a quantity of this pouder which was not very great, taking fire by accident in the Arcenall of Paris, caused such a tempest, that the whole City shoke therewith, but it quite overturned divers of the neighbouring houses, and shooke off the tyles and broke the windowes of those which were further off; and to conclude, like a storme of Lightning it laid many here and there for dead, some lost their sight, others their hearing, and othersome had their limbes torne asunder, as if they had beene rent with wilde horses; and all this was done by the onely agitation of the aire into which the fired Gunpouder was turned; Iust af¦ter the same manner as windes pent up in hollow places of the earth which want vents. For in seeking passage forth, they vehemently shake the sides of the Earth, and raging with a great noise about the cavities, they make all the surface thereof to tremble; so that by the various agitation one while up, another downe, it overturnes or carries it to another place. For thus we have read that Megara and Aegina ancient∣ly most famous Citties of Greece, were swallowed up and quite overturned by an earthquake; I omit the great blusterings of the windes striving in the cavities of the earth, which represent to such as heare them at some distance, the fierce assai∣ling of Citties, the bellowing of Bulles, the horrid roarings of Lions, neither are they much unlike to the roaring reports of Cannons. These things being thus pre∣mised let us come to the thing we have in hand.
Amongst things necessary for life, there is none causes greater changes in us than the aire; which is continually drawne into the Bowells appointed by nature, and whe∣ther we sleepe, wake, or what else soever we doe, we continually draw in, and breath it out. Through which occasion Hippocrates calls it Divine, for that breathing through this mundane Orbe, it embraces, nourishes, defends and keepes in quiet peace all