OF ARTS AND SCIENCES. 215 



white mass made up of small needles. It was washed with water, 

 dried in vacuo, and analyzed. 



0.2686 gr. of the salt gave 0.1200 gr. AgCl. 



Calculated for C 8 II G BrO.,Ag. Found. 



Silver 33.54 33.62 



It is slightly soluble in boiling water, freely in dilute nitric acid. 



Calcic Ortliobromalphatoluylate, Ca(C 6 H 4 BrCH 2 COO) 2 , made by 

 boiling an aqueous solution of the acid with calcic carbonate, and 

 evaporating the liltrate, gave, dried in vacuo, the following result: — 



0.24969 gr. of the salt gave 0.0300 gr. CaO. 



Calculated for (C 8 H 6 Br0 2 ).,Ca. Found. 

 Calcium 8.54 8.58 



It crystallizes from a very concentrated hot solution in circular 

 groups of radiating needles, very soluble in water, somewhat less so in 

 alcohol. 



The barium salt formed an amorphous mass, like varnish. 



A solution of the ammonium salt gave the following precipitates : 

 with a salt of copper, bluish green; with ferric chloride, orange brown; 

 with mercurous or plumbic salts, white; all of which resembled those 

 obtained with the parabromalphatoluylic acid. 



Orthobrombenzylsulphocyanate, C G H 4 BrCH 2 SCN, is an oil which 

 does not solidify in a freezing mixture of snow and salt. It was not 

 analyzed. 



Orthobrombenzyla mines. The product of the action of alcoholic 

 ammonia on orthobrombenzylbromide at 100°, for two hours, con- 

 sisted of crystals of the tertiary amine, and a liquid containing the 

 primary and secondary amines and ammonia, with their bromides. 

 After filtering, the crystals were washed with cold alcohol, sodic 

 hydrate, and finally water, and then recrystallized from warm ether 

 till they gave a constant melting-point (12H°-122°). The filtrate 

 from the crystals was evaporated to dryness, and treated with carbonic 

 dioxide to convert any free primary amine into carbonate. Upon 

 washing with water, the salts of the primary amine and ammonia dis- 

 solved, leaving the secondary amine as an oil, which, after washing 

 with sodic hydrate, was converted into the chlorplatinate by addition 

 of chlorplatinic acid to its alcoholic solution. To the filtrate from the 

 secondary amine, sodic hydrate was added, and the oily primary amine 

 thus obtained washed with water until it was free from ammonia, care 

 being taken not to expose it to the carbonic dioxide of the air. 



