Tropical nature, and other essaysMacmillan, 1878 - 356 pages |
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Page 59
... other plants which possess more than the rudiments of a similar property . 1 See Nature , vol . xvi . p . 349 , where the German botanist Pfeffer's theory is given . It is true that , as they are all low SENSITIVE - PLANTS . 59.
... other plants which possess more than the rudiments of a similar property . 1 See Nature , vol . xvi . p . 349 , where the German botanist Pfeffer's theory is given . It is true that , as they are all low SENSITIVE - PLANTS . 59.
Page 88
... theory of natural selection the successive variations by which the eyes were reduced and ultimately lost must all have been useful . It is true they do manage to exist without eyes ; but that is probably because , as sight became more ...
... theory of natural selection the successive variations by which the eyes were reduced and ultimately lost must all have been useful . It is true they do manage to exist without eyes ; but that is probably because , as sight became more ...
Page 158
... Theory of Protective Colours - Theory of Warning Colours - Theory of Sexual Colours - Colour as a means of Recognition - Colour proportionate to Integumentary Development - Selection by Females not a cause of Colour - Probable use of ...
... Theory of Protective Colours - Theory of Warning Colours - Theory of Sexual Colours - Colour as a means of Recognition - Colour proportionate to Integumentary Development - Selection by Females not a cause of Colour - Probable use of ...
Page 159
... theory received great support , from the difficulty of conceiving any other use or meaning in the colours with which so many natural objects are adorned . Why should the homely gorse be clothed in golden raiment , and the prickly cactus ...
... theory received great support , from the difficulty of conceiving any other use or meaning in the colours with which so many natural objects are adorned . Why should the homely gorse be clothed in golden raiment , and the prickly cactus ...
Page 161
... Theory of Heat and Light as producing Colour . — In commencing our study of the great mass of facts relating to the colours of the organic world , it will be necessary to consider first , how far the chief theories already proposed will ...
... Theory of Heat and Light as producing Colour . — In commencing our study of the great mass of facts relating to the colours of the organic world , it will be necessary to consider first , how far the chief theories already proposed will ...
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Common terms and phrases
abundant adapted adorned Africa allied Amazon animals ants Asia attract bamboo Batavia beautiful become birds blue brilliant butterflies carnivora causes changes character characteristic climate colour Colours of Animals comparatively conspicuous continent curious Danaidæ Darwin distinct Eocene equator equatorial zone existence extensive fact families fauna favourable feet female ferns fertilization flowers foliage forests fruits genera genus greater green groups habits heat humming-birds hyænas immense inhabit insects Juan Fernandez land larger larvæ leaves lemurs less light Madagascar Malay Archipelago male mammalia marsupials Miocene monkeys natural selection naturalists North northern observed occur ocean ornaments Palearctic parrots peculiar perhaps phenomena plants plumage probably produced proportion protection rays region remarkable resemble sexual selection showy slender sometimes South America species spots structure sun-birds surface tail temperate zones temperature theory tints tion trees tropical trunks Ungulata variation varied variety vegetation whole wings yellow