Evolution by Atrophy in Biology and SociologyD. Appleton, 1899 - 316 pagini |
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Pagina
... ancestral forms ( 2 ) Development of organs in the individual ( 3 ) Philogenetic evolution of function · Section I. Transformation of organs of animals 1274 7 22 *** 23 23 25 ( 4 ) Individual adaptation 26 30 § 2. Transformation of ...
... ancestral forms ( 2 ) Development of organs in the individual ( 3 ) Philogenetic evolution of function · Section I. Transformation of organs of animals 1274 7 22 *** 23 23 25 ( 4 ) Individual adaptation 26 30 § 2. Transformation of ...
Pagina 22
... aside the original formation of these organs in their ancestral forms 22 UNIVERSALITY OF DEGENERATIVE EVOLUTION In the evolution of organs all modification necessarily attended by degeneration Preliminary considerations.
... aside the original formation of these organs in their ancestral forms 22 UNIVERSALITY OF DEGENERATIVE EVOLUTION In the evolution of organs all modification necessarily attended by degeneration Preliminary considerations.
Pagina 23
... ancestral forms , their development in the indivi- dual , the phylogenetic evolution of function , and the great variation resulting from individual adaptation . Before entering upon our immediate subject , it would be as well to define ...
... ancestral forms , their development in the indivi- dual , the phylogenetic evolution of function , and the great variation resulting from individual adaptation . Before entering upon our immediate subject , it would be as well to define ...
Pagina 24
... ancestral evolution . Generally speaking , and especially in the case of plants , the development of organs in an individual is direct , and gives no clue to its ancestral history . Moreover , when there is a re- capitulation of ancestral ...
... ancestral evolution . Generally speaking , and especially in the case of plants , the development of organs in an individual is direct , and gives no clue to its ancestral history . Moreover , when there is a re- capitulation of ancestral ...
Pagina 120
... ancestral valves being no longer indispensable are in a condition of degeneration . 7. Sense Organs . In the olfactory organ there remains a degenerate Jacobson's organ . In the organ of sight there is a third eyelid in a state of ...
... ancestral valves being no longer indispensable are in a condition of degeneration . 7. Sense Organs . In the olfactory organ there remains a degenerate Jacobson's organ . In the organ of sight there is a third eyelid in a state of ...
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
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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