Chap. 1 7. A Tredttfe ^/BODIES. 



cold received firft but in the outward parts of it, and by preC- 

 fing> to make that vvichout have a more forcible ingrefllon. 



But the whole doctrine of Meteors is fo amply, fb ingeniouf- 

 ly.and Ib exactly performed by that never enough praifed Gen- 

 tleman Monfieur DCS Carces in his Meteorologicall difcourfes; 

 as I fliould wrong my felfand my Reader,if I dwelled any lon- 

 ger upon this fubjcct. And whofe Phyficall difcourfes, had they 

 been divulged before I hadenued upon this work, I am pcrfwa- 

 ded would have excufcd the greateft part of my pains in delive- 

 ring the nature of bodies. 



It were a fault to paflc from treating of condenfation, without g. 

 notine-o ordinary an effect of it as is the joyning topether of How parts of 



L- i r L j rj-. L J- T u- L ' r C the fame or di- 



parts of the fame body, or of divers bodies. In which we Ice for y c rsbodicsare 

 the moft part that the folide bodies which are to be joy ned to- ]^ nc( } more 

 gcther, are firft cither heated or moiftened , that is, they are ra- thereby cof! 

 rified: and then they are left to cold airc or to other cold bo- i nftno " > 

 dies to thicken andcondenfe (as above we mentioned of fyrupes 

 and jellies;) and fo they are brought to ftick firmly together.In 

 the like manner we lee that when two metalls are "heated till 

 they be almoft brought to running, and then are prefTed toge- 

 ther by the hammer, they become one continued body The like 

 we fee in glafTe, the like in wax, and in divers other things. On 

 the contrary fide; whe.n a broken ftone is to be pieced together, 

 the pieces of it muft be wetted, and the ciment muft be likewifc 

 moiftcned, and then joyning them aptly, and drying them, they 

 flick raft together. Glew is moiftened, that it may by drying 

 afterwards hold pieces of wood together. And the fpefracle- 

 makers have a competition which muft be both heated and moi- 

 ftencd, to joyn trnto handles of wood theglaffes which they are 

 to grind. And broken glaflcs are cimenced with cheefc and 

 chalk or with garlick. 



All thefe effects our fenfc evidently fhewcth us , arife out of 

 eondenfationjbut to our reafbn it belongeth to examine particu- 

 larly by whatfteps they arc performed. Firft then we know that 

 heat doth fubtilize the Htde bodies which arc in the pores of the 

 heated body; and partly a lib it opencth the pores of the body it 

 fclf, if it be of a nature that permitteth it; as it fccmcch thole bo- 

 dies are, which by heat are mollified or are liquefaible. Again, 

 we know that moifture is mote iubulc to enter into fmall creeks 



then 



