I 5 3 THE HISTORY OF CHEMISTRY, ficc. 



fore us, the progrefs of chemiftry was much in- 

 debted to two fuch powerful (limuli, as the de. 

 lire of wealth and of long life ; by which it was 

 enabled to remove all the obftacles that igno- 

 rance and fuperflition could oppofe, and attain 

 to that height at which we have now beheld it, 



THE 



