OF POTASH. 261 



of potash (in the proportion of 15 parts acid and 

 8*75 carbonate of potash) in water, and concen- 

 trating the solution. The crystals obtained were 

 large, transparent flat four-sided rectangular 

 right prisms, terminated by rectangular bases ; 

 the lustre silky ; the crystals not altered by ex- 

 posure to the air ; taste, a peculiar and not un- 

 pleasant sweet. 24%5 grains of these crystals, 

 when burnt in an open crucible, left very nearly 

 8-75 grains of carbonate of potash. Hence, the 

 constituents of the salt are 



1 atom benzole acid 1 5 

 1 atom potash . 6 



'.} atoms water . 3 '3 75 



24-375 



14. Oxalate of potash. This well known salt, 

 which crystallizes in four-sided oblique prisms, 

 i> composed of 



1 atom oxalic acid 4-5 



1 atom potash . 6 



1 atom water 1-125 



11-625 



15. Binoxalate of potash. This salt crystal- 

 lizes in rhombs, only slightly oblique, and there- 

 fore approaching the form of cubes. Its consti- 

 tuents are 



II -3 



