Darwinism Stated by Darwin Himself: Characteristic Passages from the Writings of Charles DarwinD. Appleton, 1884 - Всего страниц: 351 |
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... leaves the ellipses are generally narrow . Even the stems of seedlings before they Page 3 . have broken through the ground , as well as their buried radicles , circumnutate , as far as the pressure of the surrounding earth permits . In ...
... leaves the ellipses are generally narrow . Even the stems of seedlings before they Page 3 . have broken through the ground , as well as their buried radicles , circumnutate , as far as the pressure of the surrounding earth permits . In ...
Стр. 3
... leaves of leaf - climbers , and apparently certain roots , all have the power of move- ment when touched , and bend quickly toward the touched side . Extremely slight pressure often suffices . If the pressure be not permanent , the part ...
... leaves of leaf - climbers , and apparently certain roots , all have the power of move- ment when touched , and bend quickly toward the touched side . Extremely slight pressure often suffices . If the pressure be not permanent , the part ...
Стр. 24
... leaves is so conspicu- of Movement ous a phenomenon that it was observed as early in Plants . page 280 . as the time of Pliny ; and since Linnæus pub- lished his famous essay , " Somnus Plantarum , " it has been the subject of several ...
... leaves is so conspicu- of Movement ous a phenomenon that it was observed as early in Plants . page 280 . as the time of Pliny ; and since Linnæus pub- lished his famous essay , " Somnus Plantarum , " it has been the subject of several ...
Стр. 25
... leaves , the cotyledons move vertically upward at night , while at the same time the leaflets move vertically downward ; and that in the same genus the leaves or cotyledons of some species move upward , while those of other species move ...
... leaves , the cotyledons move vertically upward at night , while at the same time the leaflets move vertically downward ; and that in the same genus the leaves or cotyledons of some species move upward , while those of other species move ...
Стр. 26
... leaves or leaf- lets , clearly indicates , as it seems to us , that the object gained is the protection of the upper surfaces from being chilled at night by radiation . There is nothing improb- able in the upper surface needing ...
... leaves or leaf- lets , clearly indicates , as it seems to us , that the object gained is the protection of the upper surfaces from being chilled at night by radiation . There is nothing improb- able in the upper surface needing ...
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Darwinism stated by Darwin himself: Characteristic passages from the ... Charles Darwin Ограниченный просмотр - 2023 |
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acquired action admit allied apes appear Asa Gray become believe birds blush body breeds Catarrhine cause characters closely Cloth Darwin degree descended developed distinct species domestic doubt early effects eggs existence expression extinct eyes fact favorable feel females fertilization forms gemmules genera geotropism habit hair HERBERT SPENCER hermaphrodites highly horse Illustrations increase individuals inhabitants inherited insects instance intermediate islands kind labellum lancelet language larvæ less living lower animals males mammals manner ment mental mind modified monkeys movements muscles natural selection naturalists observed offspring organic Origin of Species papillæ parent peculiar period plants pollen possess present principle probably produced Professor progenitors Quadrumana quadrupeds races remarkable resemble rudimentary savages seeds seems seen sexes sexual selection slight South America structure suppose T. H. HUXLEY tend tendency tion transmitted utricle variability variations varieties various vertebræ whole wild worms young