C. STACY FRENCH 59 



narrower slit widths in this laboratory. We were rather surprised to 

 confirm the finding of a fluorescence peak at 687 m;a since bacterio- 

 chlorophyll does not have a corresponding absorption band. 



This bacteriochlorophyll preparation was separated chromatographi- 

 cally by Dr. Smith into three fractions — one blue, one green, and one 



I 436 mil. miidciil 



4 05 m|i ifiddr nt / 



650 



750 m)i 



700 

 WAVELENGTH 



Fig. 8. Fluorescence spectrum of the blue fraction of a bacteriochlorophyll prepa- 

 ration in ether. ( Smith, unpublished. ) 



650 



750 m^ 



700 

 WAVELENGTH 



Fig. 9. Fluorescence spectrum in ether of the green pigment accompanying bac- 

 teriochlorophyll. ( Smith, unpublished. ) 



