Some where she hath voides without any humour. There likewise if no light show the difference of the aire, yet will I say that the clouds and mists cons••st in obscuritie. For neither are these aboue the earth, because they seeme so to be, but because they are, they are seene. There notwithstanding also are they for this cause, because they are not seene. Thou mayest know likewise that there, there doe flow certaine riuers, no lesse great then those that we see, the one stea∣ling along sweetly, the other violently and with roaring noise, by reason that they fall downe headlong from craggie and stonie places. What then wilt thou not confesse also, that there are lakes vnder the earth, and that there are certaine pooles, whose waters standeth continually without issue? Which if it be so, it followeth also that the aire is burthened, and by his burthen bended, and rai∣seth the wind by his vrging forward. We shall know well then that these winds shall be produced, in obscure places, out of these clouds vnder earth, when they haue gathered so much forces that either may suffice to breake thorow the re∣sistance of the earth, or occupie some open passage for these windes, and that by these caues they may be conueyed amongst vs. But this is most manifest, that vnder ••arth there is a great quantitie of sulphure and other minerals, that serue to enkindle fire. The aire searching issue by these caues, after it is very much agitated, must of necessity in this great presse, expresse and cause the fire to iss••••. Afterwards the flames being spred more at large, if there remained any aire that was still, the subtiltie thereof gaue it motion, and there with great noise and cracking sound, it seeketh passage. But I will entreate hereof more exactly when I shall speake of, and debate of the trembling of the earth.