226 PROCEEDINGS OF THE AMERICAN ACADEMY 



I. 0.5397 gr. of the thicker needles gave 12 cc. nitrogen, at 757.4 mm., 

 and 20° t. 



II. 0.2664 gr. of the fan-shaped crystals gave 5.2 cc. nitrogen, at 

 763.1 mm. and 17.°5. t. 



Eequired for (C^HsBrOgN. Found. 



I. II. 



Nitrogen 2.67 2.53 2.26 



Owing to the small amount of the fan-shaped crystals which could be 

 isolated, I have not been able to establish its composition more securely 

 by a second analysis. 



Properties. — It crystallizes either in thick irregular w^hite prisms 

 or fan-shaped groups of white needles, is odorless, melts at 78°-79°, 

 burns with the green-bordered luminous flame belonging to all these 

 compounds, and is insoluble in water, soluble in cold, more so in hot 

 alcohol, freely soluble in ether, benzole, and carbonic disulphide. All 

 attempts to obtain a salt with hydrochloric acid alone, or in connection 

 with platinic chloride were unsuccessful. 



Triparabromhenzylamine bromhydrate, (C^.II^Br.CII^).^]}^}! Sr, was 

 formed at the same time as the free base, and separated from it by 

 boiling out the product of the reaction, with alcohol ; the viscous residue 

 left after the removal of the triparabromlieuzylamine by this means 

 was dissolved in ether, from which it crystallized on evaporation. 



0.4269 gr. of the substance gave 8 cc. nitrogen, at 767. 7 mm. and 

 17° t. 



0.4713 gr. of substance gave 0.5818 gr. AgBr. 



Required for (C^HgBr.JaNH Br. Found. 



Nitrogen 2.29 2.19 



Bromine 52.54 52.54 



Properties. — White odorless plates with a pearly lustre, melting in 

 the neighborhood of 270'-'', is insoluble in hot or cold water, almost 

 msoluble in alcohol even when boiling, soluble although not very easily 

 in ether, gives no double salt with platinic chloride. 



The tbrmation of triparabromhenzylamine as the principal product 

 of the reaction is not to be wondered at, as benzylbroraide gives a 

 similar result when treated with alcoholic ammonia (Kekule*). It is 

 not impossible, however, that some di- or even mono-parabrombenzyl- 

 amine bromhydrate was formed, as this would undoubtedly have been 



* Kekule Ann. Chem. Pharai., 137, p. 188. 



