Evolution by Atrophy in Biology and SociologyD. Appleton, 1899 - 316 pagini |
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Pagina 10
... kind is an individual.1 In the case of multicellular individuals there is an unbroken physiological continuity , while life lasts , between the cells of which they are com- posed . All these units spring from one primary cell ( ie . a ...
... kind is an individual.1 In the case of multicellular individuals there is an unbroken physiological continuity , while life lasts , between the cells of which they are com- posed . All these units spring from one primary cell ( ie . a ...
Pagina 13
... kind of worm . At first sight , then , the hectocotyle seems to be an individual . This , however , is not the case , as it reproduces , not a hectocotyle but a cephalopod . Many Echinoderms , by a spontaneous act of protection , can ...
... kind of worm . At first sight , then , the hectocotyle seems to be an individual . This , however , is not the case , as it reproduces , not a hectocotyle but a cephalopod . Many Echinoderms , by a spontaneous act of protection , can ...
Pagina 30
... kind . The parts of a bone do not unite after fracture . In that case a com- pleted joint with cartilage ligament and synovial membrane may be formed in the neighbouring tissues under the influence of the new stimuli . In extra uterine ...
... kind . The parts of a bone do not unite after fracture . In that case a com- pleted joint with cartilage ligament and synovial membrane may be formed in the neighbouring tissues under the influence of the new stimuli . In extra uterine ...
Pagina 62
... con- dition . This kind of pectoral sacrum implied the fusion of a number of vertebrae , and involved a consequent degeneration of the muscles which in earlier Pterosaurians caused 62 UNIVERSALITY OF DEGENERATIVE EVOLUTION.
... con- dition . This kind of pectoral sacrum implied the fusion of a number of vertebrae , and involved a consequent degeneration of the muscles which in earlier Pterosaurians caused 62 UNIVERSALITY OF DEGENERATIVE EVOLUTION.
Pagina 80
... kind stretches out horizontally and carries green leaves ; the others are devoid of chlorophyll , and the leaves are purely carnivorous . ( b ) Nepenthe . - The distal extremity of the leaf terminates in a receptacle of complicated ...
... kind stretches out horizontally and carries green leaves ; the others are devoid of chlorophyll , and the leaves are purely carnivorous . ( b ) Nepenthe . - The distal extremity of the leaf terminates in a receptacle of complicated ...
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