100 DOMAIN I. SI1>EROUS. 



of iron, and often attracts the magnet. It is 

 surprising that analyses have not been made of 

 a substance regarded as valuable. 



Basanite* Basanite, or the Lydian stone, is by many 

 regarded as a black jasper, seemingly with rea- 

 son, for its geognostic relations in veins, &c. 

 resemble those of the other jaspers, and small 

 veins of quartz often traverse both kinds, 

 whitejasper. The existence of white jasper has recently 

 been granted; but even this colour does not 

 refuse the presence of abundant iron, as may be 

 observed in the white ore of iron called steel ore, 

 or the spary iron ore, which is found to contain 

 from 30 to 40 of iron, with more than 20 of 

 manganese. 



The black being admitted, jasper maybe said 

 to present all colours, except blue, which seems 

 however to occur in New Spain, or at least a 

 green approaching nearly to blue. The sinople, 

 or red jasper of Hungary, sometimes contains 

 gold*; and is said by Born to hold 18 of iron. 

 When Mr. Kirwan argues against this, from 

 the comparative lightness, he forgets that many 

 ochres, and even ores of iron, are comparatively 

 light; nor is that metal itself of great specific 



* The sinople of Heralds is green ! The earth of Sinope (see 

 Pliny) was red. 



