6 



Determinations showing the relative effect of the sucrose and the excess of lead subacetate in 

 the formation of the maximum maple lead precipitate. 



Volume (cc) of lead to weight (grains) of total sirup. 



b Per cent of lead precipitated by the maple sirup, i. e., the weight of lead in grams precipitated by 100 

 grams of the maple sirup under conditions given. 



c Per cent of lead precipitated by the total sirup, i. e., the weight of lead in grams precipitated by 100 

 grams of the total sirup under conditions given. 



The relative effect of the sucrose and the excess of lead subacetate 

 iji the formation of the maple lead precipitate may readily be seen by 

 referring to the following summaries from the main table: 



Comparison of empirical lead numbers on subtests 2 and 3 showing differences due to the 



solvent action of the sugar. 



Comparison of empirical lead numbers on series A and E, showing differences due to the 

 solvent action of an excess of lead subacetate. 



[Cir. 5.3] 



