Contributions to the Theory of Natural Selection: A Series of EssaysMacmillan and Company, 1870 - 384 pages |
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Page xiii
... Existence - The Law of Population of Species - The Abundance or Rarity of a Species dependent upon its more or less perfect Adaptation to the Conditions of Existence- Useful Variations will tend to Increase , useless or hurtful ...
... Existence - The Law of Population of Species - The Abundance or Rarity of a Species dependent upon its more or less perfect Adaptation to the Conditions of Existence- Useful Variations will tend to Increase , useless or hurtful ...
Page 5
... existence twice . 10. The following law may be deduced from these facts - Every species has come into existence coincident both in space and time with a pre - existing closely allied species . This law agrees with , explains and ...
... existence twice . 10. The following law may be deduced from these facts - Every species has come into existence coincident both in space and time with a pre - existing closely allied species . This law agrees with , explains and ...
Page 14
... existence of certain species impossible . The extinction would in most cases be effected by a gradual dying - out , but in some in- stances there might have been a sudden destruction . of a species of limited range . To discover how the ...
... existence of certain species impossible . The extinction would in most cases be effected by a gradual dying - out , but in some in- stances there might have been a sudden destruction . of a species of limited range . To discover how the ...
Page 18
... existence of organic life in the greatest abundance , both as regards individuals and also as to variety of species and generic group , just as we now find that the places best adapted to the rapid growth and in- crease of individuals ...
... existence of organic life in the greatest abundance , both as regards individuals and also as to variety of species and generic group , just as we now find that the places best adapted to the rapid growth and in- crease of individuals ...
Page 25
... existence coincident both in time and space with a pre - existing closely allied species , " connects together and renders intelligible a vast number of independent and hitherto unexplained facts . The natural system of arrangement of ...
... existence coincident both in time and space with a pre - existing closely allied species , " connects together and renders intelligible a vast number of independent and hitherto unexplained facts . The natural system of arrangement of ...
Other editions - View all
Contributions to the Theory of Natural Selection: A Series of Essays ... Alfred Russel Wallace No preview available - 2018 |
Contributions to the Theory of Natural Selection: A Series of Essays Alfred Russel Wallace No preview available - 2016 |
Common terms and phrases
abundant action adapted alike Amboyna animals antennæ appear beautiful become bees beetles birds Borneo brain brilliant build butterflies caterpillars causes Celebes changes character closely allied species colour concealed conspicuous Crown 8vo curious Darwin Diphilus distinct Edition eggs essay evidence exactly existence external extinct Extra fcap facts faculties favourable Fcap flowers genera genus geological groups Guinea habits Heliconidæ imitation India individuals inhabiting insects instinct islands Java larvæ Lepidoptera less Malayan male Mimeta mimic mimicry mode modified Moluccas moths natural selection nectary nest never nidification number of species observations occur organic Origin of Species Ormenus Pammon Papilio Papilio Ulysses Papilionidæ peculiar perfect period phenomena POEMS Polydorus possess present probably produced protection race regions remarkable render resemble savage sexes sexual sexual selection shown structure Sumatra tail theory of natural Theseus tints tion trees tropical variation varied varieties whole wings
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