THE HISTORY OF CHEMISTRY, 



ing of the fmgular effecls which the rays of the 

 fun, transmitted through the windows of the 

 cupolas, are reported to Iiave produced within 

 the churches, it would appear, that the glaG 

 then ufed was tinged with various colours; al- 

 though we do not find it mentioned to be fo any 

 where. 



In Italy, long before the birth of Ghriit, we 

 meet with fepellated works, compoled of vari- 

 ous kinds of Hones, and pieces of glut's of dille- 

 rent colours, the art of which the Italians had 

 acquired from the Greeks. And yet, until the 

 right century, coloured glafs was never ufed in 

 ornamenting the windows of their churches. 

 After that time, however, they had windows 

 conP.rii'fled with bits of variegated glafs, under 

 the form of flowers, crowns, and other devices. 

 And at length, in order to give encouragement 

 to pious meditations, art ills were employed to 

 reprefent upon them ilorics from the holy fcrip- 

 turet, or the traniaclions of faints. At firit, and 

 even as late as the end of the twelfth century, 

 black figures only v/erc burned in upon red 

 glaft, which afterwards became rather ferirre. 

 In the thirteenth century the art was commu- 

 nicated through Germany, Holland, and Italy. 

 About the end of the fourteenth century, g!uf 

 was flnined with many other colours than red, 

 ;\ving chiefly to the pain.-, and induilry of John 

 vm Kick, orvon Jirugges ; and by degrees the 



* art 



