ON MINERAL VEINS. 397 



With respect to some of these, it will be perceived 

 that the proofs are complete, as they are found in the 

 following division. 



Minerals of the Amygdaloids. 



Quartz ; including amethyst Brown Spar 



Chalcedony, in all its varieties Mesotype 



Opal Nadelstein 



Snlphat of Barytes Leucite 



Fluor Spar Snlphat of Strontian 



Olivin Prehnite 



Epidote Laumonite 



Mica Ichthyophthahnite 



Chlorite Harmotome 



Steatite Analcime 



Lithomarge Stilbite 



Chlorophaeite Chabasite 



Conilite Arragonite 



To which may he added, as found sometimes in 

 quartz which is apparently of aqueous origin, 



Disthene Tremolite 



Epidote Tourmalin 



Actiaolite 



and as found in Calcareous spar, 



Emerald 



I have limited this list of aqueous minerals to those 

 which are supported by the proofs above mentioned ; 

 but if those also had been enumerated which are 

 found associated together in cavities of veins, where 

 one, or more, of the number consists of minerals de- 

 cidedly aqueous, it might have been considerably ex- 

 tended. The mineralogical reader who is thus fur- 

 nished with the principles on which this catalogue has 

 been constructed, may easily extend what I need not. 



In examining now the metallic minerals, so as to 

 determine which of them may have been formed from 

 aqueous solutions, I may first have recourse to direct 



