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CONTENTS.

in Plants-Attractive Colours of Fruits-Protective Colours of Fruits-

Seeds how Protected-Attractive Colours of Flowers--Attractive Odours

in Flowers-Attractive Grouping in Flowers--Why Alpine Flowers are so

Beautiful-Why Allied Species of Flowers differ in Size and Beauty--

Absence of Colours in Wind-fertilized Flowers—The same Theory of

Colour applicable to Animals and Plants-Relation of the Colours of

Flowers and their Geographical Distribution-Recent Views as to the

Direct Action of Light on the Colours of Flowers and Fruits-Concluding

Remarks on the Importance of Colour in the Organic World—THE ORIGIN

OF THE COLOUR-SENSE.-Supposed Increase of Colour-perception within

the Historical Period --Concluding Remarks on the Colour-sense

piges 221–2 18

TROPICAL NATURE,

AND OTHER ESSAYS.

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