VIII, A, 1 



Pratt and Gibbs: Absorption Spectra 



55 



Oscillation frequency (i). 

 A 





2000 22 24- 26 28 3000 32 34 36 38 4O00 



18 

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FIG. 2. — Full curves 2, 5-dianilinoquinone. 



Dot curve = 2,5-dianilinoquinoneanil. 

 Dash curve = azophenine. 



to 



too a 



s 



AO 



tOO 2 



AO 



