40 



739 



740 



Zoc, Vesuvius. 

 Obs., presented by Mr. G. C. Fox. 



Do. White transparent crystals. 

 lioc, Vesuvius. 

 Obs., presented by Mr. G. C. Fox. 



Do. Bluish-white crystals. 

 Jjoc.y Vesuvius. 

 Obs., presented by Mr. G. C. Fox. 



