266 



MR. G. FOWNES ON BENZOLINE, A NEW ORGANIC 



small and have but little brilliancy ; they are permanent in the dry vacuum, 

 portion subjected to analysis gave the following results : — 



Substance 



Carbonic acid produced 

 Water produced . . . 



In 100 parts, — 



4' 112 grs. 



10*51 grs. 



1*97 grs. 



(1.) 

 6971 



5-32 



(2.) 



4*27 grs. 



10-91 grs. 



2-03 grs. 



(2.) 

 69-68 



Carbon . . . • . 



Hydrogen ..... 5*32 5*28 



The formula C42H18N2, NO5+HO, gives in 100 parts,— 



Carbon 6977 



Hydrogen .... 5*26 



The acetate is a very soluble salt ; it dries up, on evaporation, to a gummy adhesive 

 mass, and probably crystallizes with difficulty, if at all. 



Pyrohenzoline. — This, as before observed, is the solid product of the dry distilla- 

 tion of benzoline. It is pressed between folds of bibulous paper to free it as much 

 as possible from oily matter, and then crystallized from boiling alcohol, in which it 

 dissolves pretty freely. It is but sparingly soluble in alcohol in the cold, and appa- 

 rently quite insoluble in water, dilute acids and alkalies. It is tasteless, and the 

 alcoholic solution has little or no alkaline reaction. At a high temperature this 

 substance fuses, and with still further increase of heat distils ; it sublimes at a tem- 

 perature below its boiling-point, the vapour condensing in feathery crystals like those 

 of benzoic acid. Melted pyrohenzoline on cooling forms a mass of radiated crystals, 

 presenting a great contrast to the glassy or resinous appearance of benzoline under 

 similar circumstances. This substance was at first imagined to be a hydrocarbon ; 

 it contains nitrogen, however, and gave on analysis the results stated below. 



a.) 



Substance 4*295 grs. 



Carbonic acid produced 13*42 grs. 

 Water produced . . 



2-08 grs. 



Hence in 100 parts,- 



(1.) 

 85*21 



5*38 



(2.) 

 3*46 grs. 



10*74 grs. 



1*71 grs. 



(2.) 

 84*66 



Carbon ..... 



Hydrogen . . . . > 5*38 5*49 



Estimation of nitrogen : — 



Substance .4*15 grs. 



Platinum salt produced ... 6*00 grs. 

 Per-centage of nitrogen . . .9*11 



