Dr. E. J. Mills's Researches on Melting-point. 9 



were united, and their bromaniline crystallized four times from 

 naphtha and nine times from alcohol, in the presence, during 

 the last two operations, of animal charcoal (C). Q was ob- 

 tained by directly treating aniline with bromine. It was 

 purified by crystallization — once from naphtha and thrice from 

 alcohol with the aid of animal charcoal (Qi), also once more 

 from alcohol (Q 2 )- 



Monobromaniline may be dried over oil of vitriol ; but I 

 have preferred to use calcic chloride. 



The melting-point of bronianiline is very sharp ; A B 

 proved exceptionally sudden in this respect. ] 



Table VIII. 





A. 



B. 



AB. 



c, 



o r q 



,! 



Q,- . 





61-78 



61-78 



61-76 



61-82 



61-65 61 



93 



61-94 





•78 



•82 



•78 



•86 



•81 



85 



•78 





•74 



•91 



•76 



•76 



•68 



74 



•97 





•89 



•80 



•83 



•80 



•89 



88 



•97 





•84 



•80 



•83 



•80 



•68 



90 



•97 





•85 



•74 



•76 



•82 



•70 



88 



•94 





•91 



■71 



•85 



•75 



•84 



72 



•83 





•80 



•82 



•76 



•82 



•78 



85 



■81 





•84 



•76 



•76 



•78 



•81 



77 



•83 





■87 



•84 



•76 



•78 



•84 



88 



•83 





•87 



•78 



•76 



•76 



•76 



79 



•81 





■84 



•89 



•74 



•82 



•84 



79 



•81 





•78 



•84 



•74 



•84 



■92 



88 



•78 





•84 







•78 



•76 



•84 



■84 



85 



•83 





6183 

 •008 



61-81 

 •010 



61-78 

 •006 



61-80 

 •006 



61-79 61 

 •014 



84 



011 



61-86 

 ■013 



Probable error ... 



Thermometer . . . 



4 



4 



4 



4 



2 



i 



2 



4. Dihromaniline [see Monobromaniline^. — The substance 

 was dissolved in water containing one tenth vol. of common 

 aqueous hydric chloride, the solution filtered cold, and mixed 

 with sufficient ammonia. 



Specimens A and B were obtained by the partial action of 

 alcoholic potash on bromacetanilides. A was crystallized 

 four times from naphtha and five times from alcohol; B three 

 times from naphtha, once from spirit, twice from alcohol. 

 C was similarly obtained ; it was separated in an evaporation 

 for monobromaniline, having been held in solution by the 

 hydrochloi'ide of that body: this sample was crystallized three 

 times from naphtha and three times from alcohol, and animal 

 charcoal was used. F and G were a result of the further 

 action of alcoholic potash on bromacetanilides. F was sepa- 



