248 PROCEEDINGS OF THE AMERICAN ACADEMY 



chloric acid, the acid solution evaporated to dryness, and the residue 

 redissolved in water, filtered from brown decomposition products, and 

 treated with a solution of sodic nitrite, when a heavy reddish brown 

 precipitate of phenylene brown was formed ; finally, another portion 

 of the ethereal solution of the base was treated with a solution of the 

 nitrate of diazobenzol, when a red crystalline precipitate was formed, 

 which turned yellow upon the addition of amnionic hydrate, and was 

 therefore the nitrate of chrysoidine. All these tests indicate the pres- 

 ence of metaphenylenediamine in the product of the action of sodium 

 amide upon the potassic benzolmetadisulphonate. The small yield is 

 undoubtedly due to decomposition of a portion of the diamine at the 

 comparatively high temperature necessary for the reaction, as there 

 was a large amount of tarry matter always associated with the 

 product. 



