Colouration in animals and plants . butalso the adjustment of all the varying parts of the organism toone uniform molecular condition, which enables it to absorb allbut a certain closely related series of light waves no matter howvaried the functions of the parts. Now, such self-colouredspecies, as florists would call them, are not only rare, but,as all horticulturists know, are extremely difficult to a pansy grower, for instance, sets to work to produce a self-coloured flower—say a white pansy without a dark eye—hisdifficulties seem insurmountable. And, in truth, this result hasn
Colouration in animals and plants . butalso the adjustment of all the varying parts of the organism toone uniform molecular condition, which enables it to absorb allbut a certain closely related series of light waves no matter howvaried the functions of the parts. Now, such self-colouredspecies, as florists would call them, are not only rare, but,as all horticulturists know, are extremely difficult to a pansy grower, for instance, sets to work to produce a self-coloured flower—say a white pansy without a dark eye—hisdifficulties seem insurmountable. And, in truth, this result hasnever been quite obtained ; for he has to fight against every naturaltendency of the plant to mark out its corolla-tube in colour, andwhen this is overcome, to still restrain it, so as to keep it withinthose limits which alone allow it to reflect the proper waves of light. The production of black and white, then, being the acme of colourproduction, we should expect to find these tints largely used for To face page 28.] Plate
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Keywords: ., bo, bookcentury1800, booksubjectanimalbehavior, booksubjectplants
