( 470 ) 



Fig. 4 



C7e 20 30 4ü ^0 60 70 60 $0 100 



Binary meltingpoint lines of Azobenzene + Stilbene 

 and of Azobenzene -^ Hydrazobenzene. 



of about 12°. The apparent axial angle in a-monobromonaphtalene 

 amounts to about 90°. Strong, inclined dispersion with 9 > v. 



The Sp. Gr. = 1,149 at 14° C. ; equivalent vol. = 159,25. 

 Topical axis : -/ : if' ^ ^ = 7,6220 : 3,6164 : 5,9389. 



As regards Hydrazobenzene and Benzylaniline the following obser- 

 vations must be made. 



