158 



Information Storage and Neural Control 



MEAN 



PHOTOSYNTHESIS 



PER UNIT 



ILLUMINATION 



(gcal kcal'i] 



10,53.1) 



•50 



-28 



(2,2,18.5) 



--I0 

 6 10 



COLLECTION DEPTH (ft) 

 Fig, 9. Photosynthesis per unit illumination as a function of sample collection 

 and suspension deptlis (means for ten experiments). 



This graph represents chlorophyll efficiency. Although the surface 

 shown is fairly similar to that of Figure 9, the greatest similarities 

 are on the left (2 ft. collection depth) and in the rear (2 ft. sus- 

 pension depth). The forward part of the Figure 10 surface (10 ft. 

 suspension depth) and the rigiit-hand side (10 ft. collection depth), 

 however, are considerably more elevated than those of Figure 9. 

 These relationships appear at a glance by noting that much more 

 of the underside of the Figure 10 surface is visible than that of 

 Figure 9. 



