OF LEAD. o7'> 



2 atoms tungstic acid . 37-5 

 1 atom protoxide of lead 1 4 



51-5 



12. Acetate of lead. The constituents of this Acetate, 

 salt have been stated in a former part of this 

 work. They are as follows : 



1 atom acetic acid . 6-25 



1 atom protoxide of lead 14 

 3 atoms water . . 3 375 



23-625 



13. Diacetate of lead. This salt was obtained 

 by boiling crystals of acetate of lead and litharge, 

 mixed each in the requisite proportions in a suf- 

 ficient quantity of distilled water. The litharge 

 was entirely dissolved ; and, by evaporating the 

 solution in a gentle heat, the diacetate was de- 

 posited in the state of a beautiful white sedi- 

 ment, which had the aspect of crystals, although 

 I could not recognise any regular form. It had 

 a sweet and astringent taste, and was soluble in 

 pure water. I dried this salt, by pressing it be- 

 tween folds of blotting paper, till it ceased to 

 give out any moisture. 45%5 grains of the mat- 

 ter thus treated being subjected to a red heat in 

 a platinum crucible, left 27'9 grains of fused 

 protoxide of lead. From this experiment I con- 

 sider the constituents of the salt to be 



A a 3 



