OF ARTS AND SCIENCES. 209 



0.4050 gr. substance gave 12.33 cc. nitrogen, under a pressure of 

 763.8 mm. and u temperature of 25'*. 5. 



Calculated for (qHelj^NH. Found. 



Nitrogen 3.12 3.40 



Properties. White needle^ with square ends, having an odor some- 

 what resembling that of the nitrile ; melting-point, 76° ; insoluble in 

 water ; sparingly soluble in cold, freely in hot alcohol, and in ether, 

 benzole, and disulphide of carbon. 



The chloride of the base, obtained by adding hydrochloric acid to 

 its alcoholic solution, crystallizes in thick, white jilates, with a very high 

 melting-point ; nearly insoluble in water, slightly soluble in alcohol 

 and benzole, freely in carbonic disulphide and glacial acetic acid. It 

 was proved to be the chloride, by treating its nitric acid solution with 

 argentic nitrate, when argentic chloride was precipitated. 



The bromide of the base was formed under certain conditions dur- 

 ing the preparation of the amines : it was purified by crystallization 

 from alcohol. Short, thick, pointed, white prisms, with a pearly lustre, 

 and a high melting-point; insoluble in water; somewhat soluble in 

 alcohol, more so in ether, benzole, and carbonic disulphide ; sparingly 

 soluble in glacial acetic acid. It was proved to be the bromide of the 

 diamine, by treating it with a solution of sodic hydrate, when a base 

 was set free, melting after recrystallization from boiling alcohol at 76° ; 

 while bromine was detected in the sodic hydrate by the usual test with 

 chlorine water and carbonic disulphide. 



Diparaiodbenzylamine chlorplatinate, \(^CQH^ICH,^^NH.^.^PtGI^, was 

 obtained as a yellow precipitate on adding platinic chloride to an alco- 

 holic solution of the base : it was washed with alcohol, dried in vacuo, 

 and analyzed : — 



0.3951 gr. substance gave on ignition 0.0609 gr. platinum. 



Calculated for [(C^Helj.NajljPtCle. Found 



Platinum 15.07 15.42 



Properties. Pale yellow microscopic crystals, grouped like certain 

 forms of frost, almost insoluble in water and alcohol. 



VOL. XIII. (n. 8. V.) 14 



