Tropical Nature, and Other EssaysMacmillan and Company, 1878 - 356 pages |
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Results 6-10 of 27
Page 6
... temperature of the day and night is under 60 ° Fahr . , while in the latter place it is 80 ° Fahr . , the daily maximum being on the average in the one case about 68 ° and in the other about 89 ° . Neither does the temperature at the ...
... temperature of the day and night is under 60 ° Fahr . , while in the latter place it is 80 ° Fahr . , the daily maximum being on the average in the one case about 68 ° and in the other about 89 ° . Neither does the temperature at the ...
Page 7
... temperature of the air . These very different effects , produced by the same amount of sun - heat poured upon the earth in different latitudes is due to a combination of causes . The most important of these are , probably , -the ...
... temperature of the air . These very different effects , produced by the same amount of sun - heat poured upon the earth in different latitudes is due to a combination of causes . The most important of these are , probably , -the ...
Page 8
... temperature during the twenty - four hours ; while at a greater depth even the annual inequalities disappear , and a uniform temperature , which is almost exactly the mean temperature of the locality , is con- stantly maintained ...
... temperature during the twenty - four hours ; while at a greater depth even the annual inequalities disappear , and a uniform temperature , which is almost exactly the mean temperature of the locality , is con- stantly maintained ...
Page 9
... temperature is also least ; while in September , with a greater daily range of humidity ( 62 to 92 ) the range of temperature is the greatest , and the lowest temperatures are recorded in this and the pre- ceding month . It is a curious ...
... temperature is also least ; while in September , with a greater daily range of humidity ( 62 to 92 ) the range of temperature is the greatest , and the lowest temperatures are recorded in this and the pre- ceding month . It is a curious ...
Page 10
... temperature from 80 ° to 90 ° Fahr . , there would be about 20 grains in the same quantity of air . The most important fact however is , that the capacity of air for holding vapour in suspension increases more rapidly than temperature ...
... temperature from 80 ° to 90 ° Fahr . , there would be about 20 grains in the same quantity of air . The most important fact however is , that the capacity of air for holding vapour in suspension increases more rapidly than temperature ...
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abundant adapted adorned Africa allied Amazon animals ants attract bamboo Batavia beautiful become beetles birds blue Borneo brilliant butterflies carnivora causes change of colour character characteristic climate Colours of Animals conspicuous continent curious Danaidæ Darwin distinct elegant equatorial zone existence extensive fact families favourable feet female ferns fertilization flowers foliage forest-trees fruits genera genus greater green groups habits heat humming-birds hyænas immense inhabit insects Juan Fernandez kinds land larger larvæ leaves lemurs less light Madagascar Malay Archipelago male mammalia Miocene monkeys natural selection naturalists nests North observed occur organic ornaments Palearctic palms 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 toucans trees trunks uneatable variation varied variety various vegetation whole wings yellow