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TRANSACTIONS OF THE 



FOURTH ORDER— NITRATE. 



Mono-axis. 



H. from li to 2. 



G. from 1 ; 2 to 2, 1. 



Taste cooling saltish ; examples — saltpetre and nitrate 

 of soda. 



FIFTH ORDER— SULPHATE. 



H. from 2 to 4§. 



G. from 1, 4 to 3, 2. 



Taste always salty astringent ; in some metallic, (vit- 

 riolic,) in some acerb, and in some bitter. Examples, 

 glauber salt, alum, all the vitriols, glauberite, po- 

 lyhalite &c. 



SIXTH ORDER— ALLIATE. 



Diamond, to wax lustre. 



H. from 3 to 4. • 



G. from 3, 6 to 3, 7. 

 Taste acerb, sweet, saltish. Ex. oxide of arsenic. 



SEVENTH ORDER— BORATE. 



H. from 1 to 2§. 

 G. from 1, 4 to 1, 7. 



Taste slightly alkaline or acid. Ex. borax, sassoline. 



