262 KRAEMER — NATURE OF COLOR IN PLANTS. [April 



Color Principles Extracted with Alcohol — Continued. 



Color Principles Extracted with Dilute Alcohol. 



51. Black Mexican corn {Zea Mays) . . . . 



52. Geranium, house {Pelargonium ) . 



53. Geranium, wild {Geranium maculatum) 



54. Houstonia {Houstonia coerulea) .... 



55. Hyacinth, dark red {Muscari botryoides) 



56. Hyacinth, blue {Muscari botryoides) . . 

 bl. Lilac {Syringa vulgaris) 



58. Rhubarb (iB/ieww ) 



59. Strawberry {Fragaria ) 



60. \ip\et, Uue {Viola cuculata) 



61. Wistaria {Kraunhia frutescens) 



Grains 

 Petals 

 Petals 

 Petals 

 Petals 

 Petals 

 Petals 



Outer portion of pe- 

 tioles 

 Fruit 

 Petals 

 Petals 



Light purplish-red 

 Light purplish-red 

 Pale straw 

 Pale straw 

 Light yellowish-red 

 Purplish-red 

 Brownish-yellow 

 Pale red 



Yellowish-red 

 Greenish-yellow 

 Pale brown 



Color Principles Extracted with Water. 



