Tropical Nature, and Other EssaysMacmillan and Company, 1878 - 356 pages |
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Page 7
... of rain and dew . We will briefly consider the manner in which each of these causes contributes to the degree and the uniformity of the equatorial temperature , Influence of the Heat of the Soil . - It CAUSES OF TROPICAL HEAT .
... of rain and dew . We will briefly consider the manner in which each of these causes contributes to the degree and the uniformity of the equatorial temperature , Influence of the Heat of the Soil . - It CAUSES OF TROPICAL HEAT .
Page 8
Alfred Russel Wallace. Influence of the Heat of the Soil . - It is well known that at a very moderate depth the soil maintains a uniform temperature during the twenty - four hours ; while at a greater depth even the annual inequalities ...
Alfred Russel Wallace. Influence of the Heat of the Soil . - It is well known that at a very moderate depth the soil maintains a uniform temperature during the twenty - four hours ; while at a greater depth even the annual inequalities ...
Page 9
... Influence of the Aqueous Vapour of the Atmosphere . -The aqueous vapour which is always present in considerable quantities in the atmosphere , exhibits a singular and very important relation to solar and terrestrial heat . The rays of ...
... Influence of the Aqueous Vapour of the Atmosphere . -The aqueous vapour which is always present in considerable quantities in the atmosphere , exhibits a singular and very important relation to solar and terrestrial heat . The rays of ...
Page 11
... Influence of Winds on the Temperature of the Equator . The distance from the northern to the southern tropics being considerably more than three thousand miles , and the area of the intertropical zone more than one - third the whole ...
... Influence of Winds on the Temperature of the Equator . The distance from the northern to the southern tropics being considerably more than three thousand miles , and the area of the intertropical zone more than one - third the whole ...
Page 12
... influence of currents of air of unusually low temperature . Thus in July near the Aru islands , the writer experienced a strong south - east wind which almost neutralised the usual effects of tropical heat although the 12 TROPICAL ...
... influence of currents of air of unusually low temperature . Thus in July near the Aru islands , the writer experienced a strong south - east wind which almost neutralised the usual effects of tropical heat although the 12 TROPICAL ...
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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