NOME II. NIOE1TE. 



that of a vase, it would become one of the most 

 beautiful materials of the arts. 



" There is another variety of this rock, with 

 ittle globules very near each other, but offering 

 ;he same system of formation. This, according 

 :o M. Rampasse, appears in different parts of the 

 chain of Niolo, in Corsica, being far more com- 

 non than the former ; but very curious, because 

 n the fractures may be easily discerned the 

 node of formation of the globules, which are the 

 'esult of a particular system of crystallisation. 

 The oxydation of the iron having diminished the 

 ~orce of the cohesion of this rock, it is difficult 

 o obtain large pieces. The same cause has 

 )ccasioned shades of different colours ; while the 

 ize of the globules does not exceed four or five 

 ines in diameter. Their formation approxi- 

 nates to that of the variolites of Durance ; but 

 heir crystallisation is more decidedly enounced 

 ban that of the latter." 



From this last description it seems doubtful 

 vhether the petals appear in the latter kind. 

 \s the flowers of the former bear no small re- Name, 

 emblance to the marigold, caltha, it was ima- 

 gined that Calthite might be a proper appella- 

 ion : but if in the smaller kind no petals ap- 

 pear, the name of Niolite may be preferable; 



