A SPECTROPHOTOMETRY STUDY OF FLUORESCENCE. 



15 



*V- 



.6// 



.all 



Fig. 13- 

 Curves for daylight-petroleum and daylight-acetylene 



.4/1 



.5/1 



Fig. 14. Quinine sulphate in water. 



Curve .4 . Fluorescence spectrum when excited by Hg line, 0.3650 p. 

 Curve B. Fluorescence spectrum when excited by daylight. 

 Curve T. Transmission spectrum. Layer 8 cm. thick. 



