OP ARTS AND SCIENCES. 61 



of the bromides from water. These observations rendered a repetition 

 of Berlin's work very interesting ; but we did not follow the process 

 given by him, as we have found a much more easy and simple method 

 for the separation of the bases. Alcoholic ammonia acted very 

 quickly, even in the cold, on parachlorbenzylbromide : the product 

 from this or from the action in a sealed tube at 100° consisted of crystals 

 either of the bromide of the tertiary amine or of the base itself, and of 

 an alcoholic solution, which, filtered off and evaporated on the steam- 

 bath, yielded the bromides of ammonium and of the primary and 

 secondary amines with some free tertiary amine. This residue, after 

 washing with water to remove the bromides of ammonium and the 

 primary amine, was repeatedly crystallized from hot alcohol, until it 

 was divided into slightly soluble scales of secondary bromide and 

 needles of the free tertiary amine readily soluble in boiling alcohol. 



Triparachlorbenzylamine, (C 6 JI i ClCIl 2 ) 3 ]!i, was freed from a trace 

 of bromide by crystallizing from ether, dried in vacuo, and analyzed. 



0.7096 grs. of substance gave 1.6780 grs. C0 2 , and 0.3300 grs. 



H 2 0. 



Calculated for (CjHgCl^N. Found. 



Carbon 64.78 64.49 



Hydrogen 4.61 5.16 



Properties. Bunches of white needles, when crystallized from al- 

 cohol ; from ether it separates as an oil, which solidifies after some 

 time in flattened prisms ; it is also deposited from the action of cold 

 alcoholic ammonia on parachlorbenzylbromide in short, thick, well- 

 formed crystals, with rhombic faces ; melting-point, 78^° ; insoluble 

 in water, very slightly soluble in cold, freely in hot alcohol, and in 

 ether, benzole, and carbonic disulphide, less so in glacial acetic acid. 



The chloride was obtained in an impure state when an alcoholic 

 solution of the base was heated with strong hydrochloric acid ; after 

 standing 24 hours, the solution was allowed to evaporate spontaneously, 

 when balls of radiated needles were left which melted at about 196°, 

 were soluble in alcohol, ether, and glacial acetic acid, slightly in water, 

 and insoluble, or nearly so, in carbonic disulphide and benzole ; the 

 alcoholic solution left a viscous mass, which changed into needles 

 slowly. After drying in vacuo, it lost, in the steam-bath, an amount 

 equal to less than one molecule of water ; but its melting-point was 

 unaltered, and, as it yielded crystals of the free amine on repeated 

 treatment with alcohol, it does not follow that the loss was nothing 

 but water. We could find no satisfactory method of purifying this, 

 or of making a purer substance. The bromide obtained in the prepa- 



