<jO Sketch of the latest Improvemejits [Jan, 



each other by their crystalline shape ; the one crystallizing in 

 needles, the other in tables. The constituents of the first of these 

 salts are, 



Peroxide of copper 20*50 



Potash 25-04 



Oxalic acid 36-4G 



Water 18-00 



100-00 

 The constituents of the second are, 



Peroxide of copper 22-5 



Potash 27-0 



Oxalic acid 40-5 



Water 10-0 



100-0 



Thus they differ in their water of crystallization j the one con- 

 taining double the quantity of the other. 



f Acid 49-5 56-25 



Oxalate of lime is composed of \ Lime 38-5 .... 43-75 



(^ Water 12-0 



100-00 



100-0 



f Acid 43-06 43 



Oxalate of potash \ Potash 56-77 57 



^ Water 0-17 



100 



100-00 



f Acid 55-93 64-02 



Binoxalate of potash \ Potash 31-44 35-98 



^ Water 12-63 .... 



100-00 



100-00 



fAcld 46-48 



^ , - , J J Soda 19-02 



Oxalate of soda-and- copper . . . .^ p^^^^.^^ ^^ ^^pp^^. ^.^,^^ 



I, Water 11-00 



100-00 



Pry oxalate of soda { Soda .".'.*.'.'.'!.*!.'.'.'.'.'.* ." 45-ir 



100-00 



