Evolution by Atrophy in Biology and SociologyD. Appleton, 1899 - 316 pagini |
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Pagina 1
... CAUSES OF DEGENERATIVE EVOLUTION PART I. Atrophy of organs and institutions . 245 245 247 251 Section I. The factors of atrophy 251 · ( 1 ) Biology ( accidental , individual , normal and specific atrophy ) . ( 2 ) Sociology ( accidental ...
... CAUSES OF DEGENERATIVE EVOLUTION PART I. Atrophy of organs and institutions . 245 245 247 251 Section I. The factors of atrophy 251 · ( 1 ) Biology ( accidental , individual , normal and specific atrophy ) . ( 2 ) Sociology ( accidental ...
Pagina 2
... 4. Atrophy without apparent cause Atrophy of perianth ( Artemisia , Poterium ) . Atrophy of the eyes ( Myriopodes , Cymothoë ) . Correlative atrophy PAGE 261 263 263 268 274 274 278 278 PAGE 281 282 282 • Chapter II . Atrophy of CONTENTS.
... 4. Atrophy without apparent cause Atrophy of perianth ( Artemisia , Poterium ) . Atrophy of the eyes ( Myriopodes , Cymothoë ) . Correlative atrophy PAGE 261 263 263 268 274 274 278 278 PAGE 281 282 282 • Chapter II . Atrophy of CONTENTS.
Pagina 3
... Causes of the persistence of organs or institutions without function Chapter I. Survival of organs § 1. Unfunctional organs that are not rudimentary Absence of variation ( flowers of Ficaria ranuncu- loïdes , Lysimachia Nummularia ...
... Causes of the persistence of organs or institutions without function Chapter I. Survival of organs § 1. Unfunctional organs that are not rudimentary Absence of variation ( flowers of Ficaria ranuncu- loïdes , Lysimachia Nummularia ...
Pagina 6
... caused a reaction such as recently induced an emi- nent American economist to declare the bankruptcy of biological sociology , is perhaps due to the fact that , with a few distinguished exceptions , bio- sociological investigations have ...
... caused a reaction such as recently induced an emi- nent American economist to declare the bankruptcy of biological sociology , is perhaps due to the fact that , with a few distinguished exceptions , bio- sociological investigations have ...
Pagina 12
... cause , these individuals separate , they never form them- selves into a society . ( c ) A colony of Hydra is formed by the budding of a single indi- vidual . While nourishment is abundant , all the individuals of the colony retain ...
... cause , these individuals separate , they never form them- selves into a society . ( c ) A colony of Hydra is formed by the budding of a single indi- vidual . While nourishment is abundant , all the individuals of the colony retain ...
Alte ediții - Afișează-le pe toate
Evolution by Atrophy in Biology and Sociology Jean Demoor,Jean Massart,Emile Vandervelde Vizualizare completă - 1899 |
Evolution by Atrophy in Biology and Sociology Jean Demoor,Jean Massart,Emile Vandervelde Vizualizare completă - 1899 |
Evolution by Atrophy in Biology and Sociology Jean Demoor,Jean Massart,Emile Vandervelde Vizualizare completă - 1899 |
Termeni și expresii frecvente
abdominal adaptation to arboreal adult ancestral animal apical leaves appendages aquatic Archaeopteryx assimilative Astacus Astacus fluviatilis atrophy basilar leaves basipodite become biology bipinnated blade branches calcaneum cells characters chlorophyll Choanoflagellates claw collective property colony communities complete condition consists Crustacea custom degenerative evolution digits disappeared Dollo Echinoderms embryology endopodite epipod exhibited existence exopodite ex female fins five-toed floating leaves flowers foliage leaves formed function gill Heterocephalus Huxley hypopod instance institutions joint land larvæ Lathyrus Aphaca leaf leaflets limbs male mammals marriage maxillipede membrane mesonephros metameres metatarsals modification normal origin pairs petiole phalanges physiological pineal eye plants podite primitive progressive protopodite pr Ranunculus reduced regarded remain represented result rods Rosa rugosa rudimentary organs segment social societies sociology species stages stamens stem stipules stomata structure survival tarsius tendrils terrestrial thalamencephalon third tion transformation undergone useless vertebrates vestiges walking legs
Pasaje populare
Pagina 326 - XI. ANIMAL MECHANISM : a Treatise on Terrestrial and Aerial Locomotion. By Professor EJ Marey. With 117 Illustrations. Second Edition. Crown 8vo. price 5*. XII. THE DOCTRINE OF DESCENT AND DARWINISM. By Professor Oscar Schmidt. With 26 Illustrations. Fourth Edition. Crown 8vo. price 5*. XIII. THE HISTORY OF THE CONFLICT BETWEEN RELIGION AND SCIENCE. By JW Draper, MD, LL.D. Fifteenth Edition. Crown 8vo. price 5*. XIV. FUNGI: their Nature, Influences Uses, &c.
Pagina 326 - II. Physics and Politics ; or, Thoughts on the Application of the Principles of "Natural Selection " and " Inheritance
Pagina 326 - XI. Animal Mechanism : a Treatise on Terrestrial and Aerial Locomotion. By Professor EJ Marey. With 117 Illustrations. Second Edition. Crown 8vo, $s. XII. The Doctrine of Descent and Darwinism. By Professor Oscar Schmidt. With 26 Illustrations. Fifth Edition. Crown 8vo, 5*.
Pagina 82 - A plant of Drosera, with the edges of its leaves curled inwards, so as to form a temporary stomach, with the glands of the closely inflected tentacles pouring forth their acid secretion, which dissolves animal matter, afterwards to be absorbed, may be said to feed like an animal.
Pagina 326 - Edition. II. PHYSICS and POLITICS ; or, Thoughts on the Application of the Principles of ' Natural Selection ' and ' Inheritance