Tropical nature, and other essaysMacmillan, 1878 - 356 pages |
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Page 7
Alfred Russel Wallace. therefore conclude that other agencies are at work which often completely neutralise the effect which increased altitude must undoubtedly exert . There is another important difference between the temperate and ...
Alfred Russel Wallace. therefore conclude that other agencies are at work which often completely neutralise the effect which increased altitude must undoubtedly exert . There is another important difference between the temperate and ...
Page 34
... completely bare , a mass of decaying leaves and twigs and fallen fruits . More frequently it is covered with a dense carpet of selaginella or other lycopodiaceæ , and these sometimes give place to a variety of herbaceous plants ...
... completely bare , a mass of decaying leaves and twigs and fallen fruits . More frequently it is covered with a dense carpet of selaginella or other lycopodiaceæ , and these sometimes give place to a variety of herbaceous plants ...
Page 35
... completely covered with star- shaped flowers , three inches across and of a rich orange- red colour , making the trees look as if they had been artificially decorated with brilliant garlands . The recent discoveries as to the important ...
... completely covered with star- shaped flowers , three inches across and of a rich orange- red colour , making the trees look as if they had been artificially decorated with brilliant garlands . The recent discoveries as to the important ...
Page 58
... completely formed plant . In some cases the root reaches the ground before the seed above falls off . These trees greatly aid the formation of new land , as the mass of aerial roots which arch out from the stem to a considerable ...
... completely formed plant . In some cases the root reaches the ground before the seed above falls off . These trees greatly aid the formation of new land , as the mass of aerial roots which arch out from the stem to a considerable ...
Page 59
... completely carpeting the ground with their delicate foliage . Where a large surface of ground is thus covered the effect of walking over it is most peculiar . At each step the plants for some distance round suddenly droop , as if struck ...
... completely carpeting the ground with their delicate foliage . Where a large surface of ground is thus covered the effect of walking over it is most peculiar . At each step the plants for some distance round suddenly droop , as if struck ...
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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