105 



CONTENTS. 



Page. 



Sequence of Colors, . . . . , . 5 



Primary Colors, ....... 17 



Colors of the Ranunculacefe, .... 20 



Theory of Grant Allen, ..... 25 



Changes of Color in the Individual Flower, . 29 



Yellow Flowers, where found, .... 33 



Color Studies, . . . . . . . 37 



Striking Contrasts of Color in Flower and Leaf, . 41 



Green to White, etc., ...... 45 



Sap, Pollen, and Pigments, ..... 47 



Conclusions on Color Sequence, .... 54 



Honey Guides : . . . . . . . 55 



Tropteolum, 



Spanish Iris, 



Poppy, 



Tulip Tree, etc. 



Night Bloomers, 72 



Variegation of Leaves and Seeds, ... 74 



Do Insects Select Colors? 76 



Principal Visitors of Certain Flowers, ... 78 



Cruelty of Flowers, ...... 95 



Conclusions as to Selections bv Insects, . . 104 



