Chap. 17. v* Trit'ifi *f B O D I E S. 



with thermal w* fee in new beer or flle,& in muft of wine ji 



a uibftance uiiully called the mother, is wrought up to the top. 



Which in wine, will at the hft be converted into Tartar; 

 when the fpirks that arc very volatile, gre flown away; and do 

 leave thoTe parts froua whence they hav.ev*poratcd,morc groifc 

 and earthy then tlve attars, where the grader and fubtiler parts 

 continue ttill inix^d. Rur, in beer or rather it) ale ; this mother, 

 which in them we call barm, will continue longer in the fame 

 confidence, and with the fame qualities; for thelphits of it are 

 aoc ib fiery that they in lift prcfently leave the body they have in- 

 corporated therrfelves withall ; nor arc hot enough tobaJkeit 

 into a hard confidence. And therefore bakers make ufe of it to 

 xaife their bread; which .neither it will dk>,urtlcflTe it be kept from 

 cold; both which, are evident Cgncs that it works in force, of heat; 

 andconlequcntly, that it continucth ftill a bo,t& liglu liibftance. 

 And again wefee that after wine orbecr hath vviought once, 

 a violent motion will make it work anew. As is dayly icen ia 

 great lightnings and in thunder, and by much racking /of them; 

 ixar fuch motion rarifieth, and confequently hcatech them: partly 

 by feparating the little parts of the liqueur, which were before as 

 glewcd together, and therefore lay quietly; but now, by their 

 pulling afunder,and by the liqueurs growing thereby morclooic 

 then it was, -they have frccdomc to play up and downiand partly 

 by beating one part againft another; which breaketh and divi- 

 deth them into lefTer atomcs,& fb brlngeth fome of them into the 

 ftatc of fire; which you may remember ,is nothing elfe but a body 

 brought into fuch a degree of UttlencrTe and rarity of its pares. 

 And this is the reafon why fuch hard and drie bodies as have 

 an unctuous fubftance in them, are by motion cither eafily feton 

 re, or at the leaft, fire is eafily gotten out of them. As happen^- 

 eth in flints, and in divers other ftones, which yield fire when 

 they are rtrucken; and if prefcndy after you fmcll unto them, 

 yoiifhall perceive an odour of brimftone and of burning which 

 i* a certain figne that the motion did convert into fire the natu- 

 irall brimftone that was mingled with the flint, and wbofe den- 

 ier parts were grown cold, and fo fkick to the ftoue. And in like 

 manner, the ivy wood and divers others>as alfo t!xr Indian canes 

 (which from thence are called firccanqs ) being rubbed with 

 Ibine other ftick of the fame nature; if they be firft very dry, will 



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