Tropical Nature, and Other EssaysMacmillan and Company, 1878 - 356 pages |
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Page 16
... effect is still very important . Evaporation occurs chiefly during the hottest sunshine , when it tends to moderate the extreme heat , while condensation takes place chiefly at night in the form of dew and rain , when the liberated heat ...
... effect is still very important . Evaporation occurs chiefly during the hottest sunshine , when it tends to moderate the extreme heat , while condensation takes place chiefly at night in the form of dew and rain , when the liberated heat ...
Page 17
... effect is produced by the sun's varying altitude during its passage from the northern to the southern tropic . In this favoured zone the heat is never oppres- sive , as it so often becomes on the borders of the tropics ; and the large ...
... effect is produced by the sun's varying altitude during its passage from the northern to the southern tropic . In this favoured zone the heat is never oppres- sive , as it so often becomes on the borders of the tropics ; and the large ...
Page 19
... effects . In Central India the scanty and intermittent rainfall , with its fearful accompaniment of famine , is no doubt in great part due to the absence of a sufficient proportion of forest - covering to the earth's surface ; and it is ...
... effects . In Central India the scanty and intermittent rainfall , with its fearful accompaniment of famine , is no doubt in great part due to the absence of a sufficient proportion of forest - covering to the earth's surface ; and it is ...
Page 33
... effect among the more ordinary - looking foliage . Contrasted with this is the fine pinnate foliage of some of the largest forest - trees which , seen far aloft against D the sky , looks as delicate as that of the TYPES OF FOLIAGE . 33.
... effect among the more ordinary - looking foliage . Contrasted with this is the fine pinnate foliage of some of the largest forest - trees which , seen far aloft against D the sky , looks as delicate as that of the TYPES OF FOLIAGE . 33.
Page 51
... effect by their flowers . This is due partly to the very large pro- portion of the species having quite inconspicuous flowers ; and partly to the fact that the flowering season for each kind lasts but a few weeks , while different ...
... effect by their flowers . This is due partly to the very large pro- portion of the species having quite inconspicuous flowers ; and partly to the fact that the flowering season for each kind lasts but a few weeks , while different ...
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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