THE VISUAL PIGMENTS 



I I I I I I I I I I I 1 n I I I 



CO 



100 — 



850 



I I I I I I I I i I I I I I I I I I I 



100 



50 



00 



I I I 



j_U 



I I I I I I I 



400 



500 

 Wavelength in mp 



600 



Fig. 1 .6. (A) Absorption spectra of visual purple solutions of various 



concentrations. (B), as (A), but replotted as percentages of their 



respective maxima. 



16 



