294 PROCEEDINGS OP THE AMERICAN ACADEMY 



from the sodic nitrite at a temperature of 26°. 5, and a pressure of 

 765 mm. ; 58.45 gr. of the solution gave 1.6583 gr. of argentic bro- 

 mide, and yielded 0.8499 gr. of the diethylether of trinitrophloro- 

 glucine. The organic matter insoluble in water weighed 5.78 gr. 



III. Weight taken, 1.0366 gr. Weight of aqueous solution, 



121.4 gr. ; 62.5 gr. of the solution gave 13.6 c. c. of nitrogen 

 from the sodic nitrite at a temperature of 21° and a pressure of 

 765.2 mm. ; 58.9 gr. of the solution gave 0.2700 gr. of argentic 

 bromide. The organic matter insoluble in water weighed 0.48 gr. 



IV. Weight taken, 10 gr.* Weight of aqueous solution 142.9 gr. ; 

 13.7 gr. of the solution gave 25.7 c.c. of nitrogen from the sodic 

 nitrite at a temperature of 29°. 5 and a pressure of 759.2 mm.; 

 55.1 gr. of the solution gave 1.9029 gr. of argentic bromide; 1.7 gr. 

 of the diethylether of trinitrophloroglucine were obtained from the 

 10 gr. used. The weight of organic matter insoluble in water was 

 6.4 gr. 



V. Weight taken, 10 gr.* Weight of aqueous solution, 114.8 gr. ; 

 14.6 gr. of the solution gave 32.3 c.c. of nitrogen from the sodic 

 nitrite at a temperature of 28° and a pressure of 764.1 mm. ; 48.7 gr. 

 of the solution gave 0.9573 gr. of argentic bromide; 2.4 gr. of the 

 diethylether of trinitrophloroglucine were obtained from the 10 gr. 

 used. The weight of organic matter insoluble in water was 5.6 gr. 



The results of these experiments are given in tabular form at the 

 end of the next section. 



Experiments in which Benzol was the Principal Solvent used. — 

 VI. Weight taken, 10.0220 gr. Weight of aqueous solution, 

 126.65 gr. ; 11.7 gr. of the solution gave 17.15 c. c. of nitrogen 

 from the sodic nitrite at a temperature of 24° and a pressure of 



764.5 mm.; 28.7 gr. of the solution gave 1.6952 gr. of argentic 

 bromide; 24.7 gr. of the solution gave after the nitrous acid had 

 been expelled by sulphuric acid 12.2 c. c. of nitrogen at a temper- 

 ature of 25° and a pressure of 766.1 mm. The acid precipitated 

 from these 24.7 gr. of the solution 0.3374 gr. of the diethylether 

 of trinitrophloroglucine. The organic matter insoluble in water 

 weighed 4.99 gr. 



VII. Weight taken, 10.1976 gr. Weight of aqueous solution, 

 135.2 gr. ; 19.3 gr. of the solution gave 27.2 c.c. of nitrogen 

 from the sodic nitrite at a temperature of 25° and a pressure of 

 750.9 mm.; 43.9 gr. of the solution gave 1.6158 gr. of argentic 



* This weight is accurate only to tenths of a gram. 



