NOME XXIII. IRON HILLS. l6l 



nature has placed veins of iron-ore; and though 

 they are there incomparably more frequent than 

 elsewhere, they are nevertheless found in more 

 temperate countries. Striking examples are seen 

 in the mountain of Eisenertz, in Stiria; and in 

 that of Rio, in the island of Elba. 



" The mountain of Eisenertz is 3000 feet per- 

 pendicular; you. there find almost everywhere 

 abundance of iron-ore, especially at its summit : 

 it is for the most part steel-ore; that is, car- 

 bonate of iron, or spathose iron-ore; and it is 

 well known that this species of ore is never found 

 but in veins."* 



He then proceeds to state that the mine of 

 Rio, in the isle of Elba, celebrated for this metal 

 since the time of Virgil, may be said to be a 

 mountain of iron. It now presents only disorder; 

 the rock which separated the arrects having been 

 decomposed, and seeming now to appear in the 

 form of a white bole. 



HYPONOME I. ENTIRE. 



Iron rock. 



HYPONOME II. MIXED. 



With quartz. 



* Patrin Min. v. 18. 

 YDL. II. M 



