6 ART. 3.— T. KAMETAKA : ON THE CONSTITUTION 



which the double bond is between the aß or ßy carbon atoms, 

 react with aniline and form not only anilides but also aniline 

 addition products. 



Following their method and with the object of seeing whether 

 elœomargaric acid gives analogous compounds, about 10 grammes 

 of the pure acid and an equal weight of freshly distilled aniline 

 (about 3 mol.) were heated together in a small flask on an 

 oil-bath to 180-190° for 3-4 hours. After cooling, water and 

 dilute acetic acid were added and well shaken in order to remove 

 free aniline ; the residual crystalline mass was twice recrystallised 

 from alcohol. White lustrous scaly crystals were thus obtained, 

 which melted at about 80°. 



Nitrogen determinations gave the following results : — 



0.075 gr. of the substance gave 3 c.c. nitrogen at 6°, 764.4 m.m. 



/. N=4.90^/^, 

 0.2445 gr. of the substance gave 8.3 c.c. nitrogen at 3°, 765.4 m.m. 



.-. N = 4.229^. 



Calculated for the anilide CisHsiO . NH CgH^ N=3.94^/^. 



On keeping these crystals (m. p. 80°) in a desiccator, they became 

 sticky and turned yellow, owing probably to their being not 

 quite pure. 



In other experiments, white scaly crystals of m. p. 67° were 

 obtained. These crystals do not change on keeping. Nitrogen 

 determinations gave the following results : — 



0.2352 gr. of the substance gave 6.8 c.c. at 10°, 764.7 m.m. 



.-. N = 3.48?^, 

 0.3298 gr. of the substance gave 10.0 c.c. at 10°, 769 m.m. 



.-. N=3.679^. 



Mean 3.589^. 



