Darwinism: An Exposition of the Theory of Natural Selection, with Some of Its ApplicationsMacmillan and Company, 1889 - 494 páginas |
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Página x
... important organs - The mam- mary glands - The eyes of flatfish - Origin of the eye - Useless or non - adaptive characters - Recent extension of the region of utility in plants — The same in animals - Uses of tails X CONTENTS.
... important organs - The mam- mary glands - The eyes of flatfish - Origin of the eye - Useless or non - adaptive characters - Recent extension of the region of utility in plants — The same in animals - Uses of tails X CONTENTS.
Página 22
... regions of the Andes and on the whole west coast down to Terra del Fuego ; and it is inconsistent with what we know of the rapid variation and adaptation of species to new conditions . What seems a more satisfactory explanation has been ...
... regions of the Andes and on the whole west coast down to Terra del Fuego ; and it is inconsistent with what we know of the rapid variation and adaptation of species to new conditions . What seems a more satisfactory explanation has been ...
Página 28
... regions of the world , and in New Zealand is exterminating many native species , including even the native flax ( Phormium 1 Still more remarkable is the increase of rabbits both in New Zealand and Australia . No less than seven ...
... regions of the world , and in New Zealand is exterminating many native species , including even the native flax ( Phormium 1 Still more remarkable is the increase of rabbits both in New Zealand and Australia . No less than seven ...
Página 35
... regions we find extensive forests of pines or of oaks . But these are , after all , exceptional , and characterise those regions only where the climate is little favourable to forest vegetation . In the tropical and all the warm ...
... regions we find extensive forests of pines or of oaks . But these are , after all , exceptional , and characterise those regions only where the climate is little favourable to forest vegetation . In the tropical and all the warm ...
Página 43
... region of Oahu , one of the Sandwich Islands , there have been found about 175 species of land - shells represented by 700 or 800 varieties ; and we are told by the Rev. J. T. Gulick , who studied them carefully , that " we frequently ...
... region of Oahu , one of the Sandwich Islands , there have been found about 175 species of land - shells represented by 700 or 800 varieties ; and we are told by the Rev. J. T. Gulick , who studied them carefully , that " we frequently ...
Outras edições - Ver tudo
Darwinism: An Exposition of the Theory of Natural Selection, with Some of ... Alfred Russel Wallace Visualização integral - 1890 |
Darwinism: An Exposition of the Theory of Natural Selection, with Some of ... Alfred Russel Wallace Visualização integral - 1890 |
Darwinism: An Exposition of the Theory of Natural Selection ..., Volumes 1-2 Alfred Russel Wallace Visualização integral - 1889 |
Palavras e frases frequentes
abundant adapted adduced allied species America amount animals and plants appears birds breed brilliant butterflies cause characters climate closely allied colours of animals common concealment conspicuous continued cross-fertilisation crossed curious Darwin dicotyledons distinct species domestic animals effects eggs enemies Eocene evidence extinct facts faculty favourable female fertile fertilised flowers genera genus geological groups habits hybrids important increase individuals infertility inhabit insects intercrossing kind larva larvæ less living male mammalia mammals markings marsupials mimicry Miocene mode modified moths natural selection naturalists nests occur offspring organs Origin of Species peculiar pigeons Pliocene pollen portion possess probably produced Professor protectively coloured pupa regions remarkable resemblance seeds self-fertilisation Silurian similar specimens spots sterility structure struggle for existence supposed tail theory tints tion toes trees tropical usually variability variation varied varieties vegetation warning colours whole wild wings Zealand