“…We also notice that the present experimental information5,18 gives the region of ratios 0.1 < [B]/[A] < 1.0 (9) Actually there may exist much lower ratios than 0.1, but there is a difficulty in measuring such low ratios. 18 We note that the above considerations apply mainly to the "higher" (green) plants, containing large numbers of chromophores, with a nonzero B/A ratio as discussed, for instance, in ref 18, i.e., where both chl-a and chl-b are represented.…”