430 TABLE II. FOR DETERMINATION OP MINERALS. 



flint, and another hornstone, others chert, granular quartz, 

 ferruginous quartz, chalcedony, prase, smoky quartz, greasy 

 quartz, milky quartz, agate, plasma, hyaline quartz, quartz 

 crystal, basanite, radiated quartz, tabular ^ quartz, etc. etc. ; 

 and it is often the case, in this state of his knowledge, that 

 he is best pleased with some treatise on the science in which 

 all these various stones are treated of with as much promi- 

 nence as if actually distinct species ; being loth to receive 

 the unwelcome truth, that his whole extensive cabinet con- 

 tains only one mineral. But the mineralogical student has 

 already made good progress when this truth is freely admit- 

 ted, and quartz and limestone, in all their varieties, have 

 become known to him. 



To facilitate still farther the study of minerals, the follow 

 ing tables are added. 



TABLE II. FOR THE DETERMINATION OF 

 MINERALS. 



The general arrangement in this table is the same as in 

 the preceding : but the order of the species, instead of being 

 that of their hardness, is that of their specific gravity. 



I.— SOLUBLE MINERALS. 



A. No Effervescence -with muriatic 

 a. Not deflagrating on burning coal*. 





Sp. gr. 





Sp.gr. 



Glauber salt 



1-4— 1-5 



Copperas, 



2-0 



Sal ammoniac, 



1-5— 1-6 



White vitriol, 



2-0— 2-1 



Epsom salt, 



1-7— 1-8 



Blue vitriol, 



2-2—2-3 



Borax, 



« 



Common salt, 



« 



Alum, 



u 



White arsenic, 



3-7 





b. Deflagrate oi 



i burning coal*. 





Nit. of lime, 



1-62 



Nit. of soda, 



2-0— 3-0 



Niter, 



1-9— 2-0 







