Tropical Nature, and Other EssaysMacmillan and Company, 1878 - 356 pages |
From inside the book
Results 6-10 of 31
Page 124
... Male- Descriptive Names - The Motions and Habits of Humming - birds - Food -Nests - Geographical Distribution and Variation - Humming - birds of Juan Fernandez as illustrating Variation and Natural Selection - The relations and ...
... Male- Descriptive Names - The Motions and Habits of Humming - birds - Food -Nests - Geographical Distribution and Variation - Humming - birds of Juan Fernandez as illustrating Variation and Natural Selection - The relations and ...
Page 134
... Male . - It is a well- known fact , that when male birds possess any unusual ornaments , they take such positions or perform such evolutions as to exhibit them to the best advantage while endeavouring to attract or charm the females or ...
... Male . - It is a well- known fact , that when male birds possess any unusual ornaments , they take such positions or perform such evolutions as to exhibit them to the best advantage while endeavouring to attract or charm the females or ...
Page 141
... male getting a tinge of reddish - brown , which gradually deepened into the fine colour now exhibited by the two insular species , while the female , more slowly , changed to white on the under - surface and on the tail , while the ...
... male getting a tinge of reddish - brown , which gradually deepened into the fine colour now exhibited by the two insular species , while the female , more slowly , changed to white on the under - surface and on the tail , while the ...
Page 144
... male , aided by the favourable change in conditions and rapid increase of population , would lead to an increased intensity of colour , the special tint being determined either by local conditions or by inherited tendencies in the race ...
... male , aided by the favourable change in conditions and rapid increase of population , would lead to an increased intensity of colour , the special tint being determined either by local conditions or by inherited tendencies in the race ...
Page 145
... male , which had already acquired his colour , remains almost undistinguishable from his imme- diate ancestral form ; but he is a little smaller , indicat- ing either that the full size of that form had not been acquired at the period ...
... male , which had already acquired his colour , remains almost undistinguishable from his imme- diate ancestral form ; but he is a little smaller , indicat- ing either that the full size of that form had not been acquired at the period ...
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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 Danaid¿ 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 hy¿nas immense inhabit insects Juan Fernandez land larger larv¿ 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