of $eat ano €olfc 43 



tcntimes there will not be one 

 pound of Allies remaining. And this 

 is the firft Condition required to 

 Heat. 



The fecond is this^ that the deter- 

 minations be very various D fome par- 

 ticles moving towards the right., fome 

 to the left, hand , fome dire&Iy up- 

 wards 5 fome downwards, and fome 

 obliquely, &c. This variety of de- 

 terminations appears to be in hot bo- 

 dies both by fome of* the Inftances 

 newly mentioned, and efpecially that 

 of flame 5 which is a body 5 and by 

 the diffufion that metals acquire, 

 when they are melted 5 and by the 

 operations of Heat that are exer- 

 cis'd by hot bodies upon others 5 in 

 what pofture or fcituation foever the 

 body to be heated be applied to 

 them. As a thoroughly ignited Coal 

 will appear every way red 5 and will 

 melt wax , and kindle brimftone, 

 whether the body be apply 'd to the 

 upper or to the lower, or to any c- 

 * her part of the burning Coal. And 

 congiuoufly to this Notion, though 



air 



