A study of the reaction of alcoholic ammonia on the 3 isomeric p-di chloro-dinitrobenzenes disclosed the surprising fact that the main product of the reaction with the 81" compound was identical with that obtained from the 2, 6-dinitro-1, 4-dichlorobenzene melting at 106", but the work was interrupted for a time before the reaction could be thoroughly investigated. Meantime Holleman and his studentsa took up the study of the dinitro-p-dichlorobenzenes ...
