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of aniline, when exposed to the temperature of boiling water for an 

 hour or two, solidifies into a crystalline mass of more or less solidity. 

 This mass is chiefly hydrobromate of aniline ; it contains, however, 

 in addition, three new organic bases, partly free, partly in the form 

 of hydrobromates. These substances are formed in very different 

 quantities, a beautiful crystalline body, difficultly soluble in alcohol, 

 being invariably the chief product of the reaction, while the two 

 other bases, the one solid but extremely soluble in alcohol, the other 

 likewise solid but quite insoluble in this liquid, are found to be pre- 

 sent in much smaller proportions. 



The preparation, in a state of purity, of the principal product of 

 the reaction presents no difficulty. The solid mass obtained by 

 digesting bibromide of ethylene and aniline in the stated propor- 

 tions is mixed with water, and submitted to distillation, when any 

 bibromide left unchanged, together with some unaltered aniline, passes 

 over. The residuary liquid is then mixed with a strong solution of 

 potassa, which separates all the bases existing as hydrobromates in 

 the form of a semi-solid resin. This is washed with water and then 

 again submitted to distillation with water, when, together with more 

 or less water, an additional quantity of aniline distils. The residuary 

 mass, when treated with boiling (methylated^ spirit, leaves the in- 

 soluble base as a white, flour-like powder, while the other two bases 

 dissolve. On cooling, the solution deposits a beautiful crystallization 

 of white needles, while the more soluble base remains dissolved in 

 the spirit. The crystals are rather difficultly soluble in alcohol; 

 two or three crystallizations from this solvent render them absolutely 

 pure. 



Thus obtained, the new base, for which, in accordance with the re- 

 sults of analysis, I propose the name ethyl ene-phenylamine, is a snow- 

 white, inodorous and tasteless crystalline compound, of nacreous lustre, 

 insoluble in water, soluble in boiling, less so in cold alcohol, soluble 

 in ether. The solutions are without action on vegetable colours. 

 The substance dissolves readily in hydrochloric, sulphuric and nitric 

 acids, especially on gently heating the liquids, which on cooling de- 

 posit well crystallized saline compounds. The hydrochlorate yields 

 yellow precipitates with bichloride of platinum and terchloride of 

 gold. When exposed to the action of heat, ethylene-phenylamine 

 fuses at 148 C. ; at a temperature approaching 300 it begins to boil 



