Types and classes; the chlorophylls, chemical constitution,
similarity of chlorophyll and hæmoglobin, properties of the
chlorophylls; the carotinoids, carotin, xanthophyll, lycopersicin,
and fucoxanthin; phycoerythrin and phycophæin; the anthocyans;
the anthoxanthins; the production of ornamental pigments in
flowers, etc.; the functions of pigments; references 102-123