Qentury I. 



and fprinkle up,in a fine Dew. This Injlance doth excellently Demonftrate 

 the Force of Comfrefiion in a Solid Bodie. For vvhenfoever a Solid Body 

 (as Wood, Stone ,Metall, &c.) isprefl'ed, there is an inward Tumult in 

 the parts thereof '•, feeking to deliver themfelves from the ComprefTion : 

 And this is the Caufe of all Violent Motion. Wherein it is ftrange in the 

 higheft: Degree, that this Motion hath never been obferved, nor enquired 

 It being of all Motions, the moft Common, and the Chief Root of all 

 Mechanicall Operations. This Motion worked) in round at fir ft, by way Of 

 Proof, and Search, which way to deliver it felf- And then worketh in 

 Progrefs, where it findeth the Deliverance eafieft. In Liquors this Motion 

 is vilible : For all Liquors ftrucken make round Circles, and withall Dafh \ 

 but in Solids (which break not) it is fo fubtile, as it is invifible t but never - 

 thelefs bewrayeth it felf by many effects 5 as in this Injlance whereof we 

 fpeak. For the Prefjure of the Finger furthered by the wetting (becaufe 

 it fticketh fo much the better unto the Lip of the Glafi) after fome con- 

 tinnance, putteth all the fmall Parts of the Glafi into work; that they 

 ftrike the wfcer fliasply$ft@m which Bmi$ibn that Sprinkling cometh. 



If you ft nkc or pierce a Solid Body^ that is Brittle, is Glafs, orSuger, it 

 breaketh not only, where the immediate force is but breaketh all about 

 into fhivers and fitters ^ The Motion? upon the Prefjure y fearching all wayes, 

 and breaking where it findeth the Body weakeft. 



The Powder in Shot being Dilated into fucha Flame, as endureth not 

 Cemprefjion, Moveth likewife in round (the Flame being in the Nature 

 of a liquid Body:) Sometimes recoyling, Sometimes breaking the Piece $ 

 But generally discharging the Bullet, becaufe there it findeth eafieft De- 

 liverance. 



This Motion upon Prefjure, and the Reciprocal! thereof, which is Motion 

 upon Ten fnrc\ weufetocall (by one common Name) Motion of Liberty £• 

 which is, when any Body, being forced to a Preter- Natural/Extent, or»Di- 

 menlion, delivereth and reftoreth it felf to the Naturall : As when a 2?/ciwi 

 Bladder (Preiled) nieth again ♦) or when Leather or Cloth tentured fpring 

 back. Thefe two Motions (of which th^re be infinite Inftances) wefhall 

 handle in due place. 



This Motion upon Prefjure is excellently alfo demonftrated'in Sounds h As 

 when one Chimethupona Bell, it foundeth But as foon as he layethhis 

 hand upon it, the Sound ceafeth : And fo, the Sound 'of a Virginall String, as 

 foon as the Quill of the Jack falleth from it, ftoppeth. For thefe Sounds 

 are produced, by the fubtile Percuffion of the Minute parts of the B ell^ or 

 String, upon the Air All one,as the Water is caufed to leap by the fub- 

 tile Percuffion of the Minute parts of the G lafs, upon the Water, whereof 

 we fpake a little before in the ninth Experiment. For you muft not take it 

 to be,the hcxWfhaking of the Bell, or String that doth it. As we fhall fully 

 declare,whenwe come hereafter to handle Sounds. 



nr-Akez Glafs with a Belly and a long Neb; fill the Belly (in part) with 

 i Water: Take alfo another Glafs, whereinto put Claret Wine and Water 

 mingled; Reverfe the firft Glafs, with the Belly upwards, Stopping the 

 Neb with your finger • Then dip the Mouth of it within the Second Glafs, 

 and remove your Finger : Continue it in that pofture for a time 5 And it 

 will unmingle the Wine from the Water : The Wine afcending and fetling in 

 the top of the upper Glafs ; And the Water defcending and fetling in the 

 bottomeofthe lower Glafs. The paflage is apparent to the Eye-, For 

 ' B 2 you 



Experiments 

 i n Confort 

 touching Se* 

 farations of 

 Bodies by 

 freight. 



*4 



