Chap. 4. ^ T/tMtifi of B O D I E S. 3 j 



ly ami on all fides t the center : and fuch a body will the more 

 eafily recci've its figure From another, and will be Jefie able to 

 cenfid of it felf : which properties, we attributcto wetnefleor 

 rnoidure. So that it appeareth, how the qualities of wet and 

 dry, which fird we found in things than were dcnfe, are al.fo 

 common to that nature of bodies, which we term rare. 



And thus, by our fird inquiry afccr \vhatkind of bodies do 

 rcfult out ofthe compounding of rarity and deniitic with gra- 

 vity, \ve difcover foure different forts : fbme dcnie ones thac are 

 dry, and others likcwife denfe that are moid : then again>fome 

 rare ones that arelikewifemoiff,& other rare ones that are dry. 



But we mud not reft here : let us proceed a little further, to 4,' 

 fearch what other properties thefe foure kinds of bodies will H ,, r " 1: "r p a ra " 

 hare ; which wefhali bed difcover, if we apply them fcverally boiics.and 

 to fome other compounded body (of which nature, are all thole 0^' denle 

 weconverfe with or fee ^ and then confider the efte&s which 

 thefe do work upon it. To beginne with that, which we faid 

 is fo executively rare that gravity hath no power over it. If we 

 look upon the multitude oHittle parts it may be divided into> 

 whereof every one will fubfid by it fclf (for we have already 

 proved ic dry ) and then fuppofe them to be moved with force 

 and ftrength againft the body we apply them to: it muft ncce 

 farily follow, that they will forcibly get into theporouinefTe of 

 it, and pafle with, violence between part and part, and ofnccef- 

 fity feparate the parts of that thing one from another ; as a knife 

 or wedge doth a folide ftibftance,by having their thinned parts 

 prefled into it : fo that if in the compounded thing, fome parts 

 be more weighty, others more light, (as of neceflitie there mud 

 be ) the hcavied will all fall lowed, the lighted will fly upper- 

 rood, and thofe which are of a mean nature between the two 

 extremes, will remain in middle. In fumme, by this a^ion of 

 as extreme rare body upon a compounded one, all the parrs of 

 one kind that were in the compounded one, will be gathered 

 into one place ; and thofe of divers kinc!> into divers places : 

 which is the notion whereby Aiidorlc hich expreflfed the na- 

 ture of heat ; and is an effect, which daily experience in burn- 

 ing and boyling, teacheth us to proceed from heat. And there- 

 fore we cannot doubt, but that fuch extreme rare bodies are as 

 Well hot as dry. 



C 2 On 



