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PROCEEDINGS OP THE AMERICAN ACADEMY 



TABLE II. — Action of Sodic Ethtlate with Benzol and Alcohol. 



An examination of these tables shows that the percentages of 

 nitrogen removed are fairly constant under each set of conditions, 

 the maximum differences being, in Table I., 2.1 per cent, in Table 

 II., 1.39 per cent, — which are surprisingly small when the nature of 

 the process and the roughness of the manipulations are considered. 

 These numbers, therefore, are well fitted to give an idea of the ef- 

 fect on the reactions of the presence of benzol, and they show that 

 it diminishes the amount of sodic nitrite formed, since the percent- 

 age of nitrogen removed when alcohol alone is present averages 

 45.92 (maximum 46.95, minimum 44.85), whereas if the solvent is 

 partly benzol the average percentage falls to 33.49 (maximum 34.42, 

 minimum 33.03). 



On the other hand, no agreement is found in the amounts of 

 bromine removed as sodic bromide, the maximum difference in 

 Table I. being 24.83 per cent, in Table II. 35.41 percent; but in 

 spite of this these results show that the presence of benzol favors the 

 removal of bromine, since of the five determinations of bromine in 

 presence of benzol (Table II.), only one (38.91 per cent) is below 

 the largest percentage of bromine obtained (42.85 per cent) when 

 alcohol was the only solvent (Table I.), and most of those in Table 

 II. are very far above those in Table I. 



As to the numerical relations between the percentages of inor- 

 ganic compounds formed under the two sets of conditions, it is to be 

 observed that in the alcohol series the amounts of nitrite and bro- 

 mide are approximately equal. In the benzol series the amount of 

 nitrite is almost exactly one third of the total amount which could 

 have been formed, and is in some cases about one half that of the 



