364 



PHOTOMECHANICAL CONSIDERATIONS 



Fig. 5. Anillustrationof the light-induced kinetics of a suspension oiR. nibrum 

 in the presence and absence of 40 per cent glycerol (HS-18). 



-0.010 



R. Rubrum 

 Anaerobic Light Response 



Fig. 6. Difference spectrum for light-induced responses of R. nibrum 

 in the presence and absence of 67 per cent glycerol. (MN-17). 



