and paction of flMatilttp* 9 



up a Volatile body is, that they be 

 conveniently fhaped for motion. For 

 if they be of branched, hook'd, or 

 other very irregular or inconvenient 

 figures,. they will be apt tobeftopt 

 and detained by other bodies, or en- 

 tangled among themfelves, and con- 

 sequently very difficult to be carried 

 upwards, in regard that, whilft they 

 are thus faftened either to one ano- 

 ther, or to any ftable body, each 

 fingle Corpufcle is not onely to be 

 eonfidered, as having its own pecu^ 

 liar bulk, fince its cohefion with the 

 other corpufcle or body that detains 

 it, makes them fit to be lookd upon 

 per tnodum Vniusy that degree of 

 heat they are expofed to being pre- 

 fumed uncapable of disjoyning them. 

 And this may be one Reafon, why 

 Water, though it be fpecifically hea- 

 vier than Oil, yet is much more eafily 

 brought to exhale in the form of va- 

 pours than is Oil, whofe corpufcles 

 by the lading ftains they leave on 

 cloath, wood, wool, &c. (which wa- 

 ter will but tranfiently moiften, not 



ftain) 



9 



