450 COMPOUND SALTS, CONTAINING 



lour, and crystallized in six-sided prisms, which 

 Mr. Ramsay of Glasgow prepares for the use of 

 the calico printers. It is pretty soluble in water, 

 and has the peculiar disagreeable taste which 

 distinguishes the cupreous salts. It seems to 

 have been crystallized from a liquid containing 

 an excess of acetate of lime : for when the crys- 

 tals are kept for some time, they become spotted 

 on the surface with small white crusts, which I 

 find to consist of acetate of lime. The result of 

 a careful analysis of this salt in my laboratory 

 gives the constituents as follows : 



1 atom acetate of lime 9*75 

 1 atom acetate of copper 11-25 

 6 atoms water 6*75 



27-75 



7. Soda-oxalate of copper. M. Vogel of Ba- 



late of cop- 

 per, reuth prepared this salt by saturating bin-oxalate 



of potash with soda, and pouring a saturated so- 

 lution of sulphate of copper into the liquid. A 

 pulverulent precipitate fell, which was redissol- 

 ved by agitation ; the liquid being concentrated, 

 the potash-oxalate of copper first crystallized ; 

 afterwards, crystals of soda-oxalate of copper 

 were deposited. They were feather shaped, 

 and consisted of four-sided prisms sometimes 

 flattened. This salt is insoluble in water. At 

 first it has a sky blue colour, but by exposure to 



