MO THE HISTORY OF CHEMISTRY, 



demnification for the lofs he ha4 fuflained of the 

 tenths of the field in which the mine had been 

 <Jifcovered. In another letter, he wrote to Ste- 

 no Sture, in 1513, he urges his prctenfions ftill 

 further. The inhabitants of the metallic coun- 

 try of Norberg, in the year 1510, complained 

 to Suante Sture, that the mine of Sahlberg 

 lately opened had driven them to great diftrcfs, 

 by enhancing the value of proviiions, of whicl; 

 it bought up the grcateft part. In Norway we 

 find fcarce any account of working of metals be- 

 ing properly underftood, until the iixteemh cen- 

 tury *. 



Glafs was long known, but its application to 

 the purpofe of windows is of a later date. It 

 is one of the moll ufeful inventions; as it admits 

 man to the enjoyment of the clear light of the 

 heavens, and the fplcndour of the fun, without 

 cxpofing him to the umvholefome changes and 

 qualities of the air. There are fome paflages, 

 indeed, to be found in undent authors, that 

 fcem to imply the ute of glaft in windows in the 

 time of Caligula : But we may, with equal rea- 

 fon, underftand them as meaning pellucid iloncs, 

 that bore ibme refemblance to glaf>. Laclan- 

 tius is the firil of them all, who has given any 

 certain account refpecling this matter. Hcfcyi, 

 44 Verius et maniicilius eit mcntcm cllc, quit per 

 11 oculos ea, qu:c funt oppoiita tranfpiciat, quu- 



"ii 



* ICcpcnh. Sal/!:. Hand!. 7 del. 



