Wood— Optical Properties of Nitroso dimethylaniline and Toluine. Plj\te I. 



2.10 



2.05 



2.00 



1.95 



1.90 



1.85 



1.80 



1.75 



1.70 



1.65 



1.60 



70 74 72 70 68 60 Ci 02 60 58 56 54 52 50 48 

 Prog. Amer. Acad. Arts and Sciences. Vol. XXXIX. 



