SALTS 



5. Biphosphate of barytes. This salt, first 



phate, 



noticed by Berzelius, crystallizes in four-sided 

 rectangular prisms with square bases. I have 

 not analyzed it ; but from the experiments of 

 Berzelius, I consider it as a compound of 



2 atoms phosphoric acid 7 

 1 atom barytes . . 9*75 

 atoms water . . 2-25 



19 



chromate, g. Chrouiate of barytes. This is a pale yel- 

 low powder, without either beauty or intensity 

 of colour. It is tasteless and anhydrous, and is 

 composed of 



1 atom chromic acid 6-5 

 1 atom barytes 9-75 



16-25 



I have not made any attempts to prepare a bi- 

 chromate of barytes. 



Sesquico- j t Sesquicolumbate of barytes. This is a 

 tasteless white powder, composed of 



1 atom columbic acid 28-5 

 1 atom barytes 9*75 



38-25 



Acetate, 8. Acetate of barytes. This salt usually crys- 

 tallizes in long needles, so very slender that it 



