Evolution by Atrophy in Biology and SociologyD. Appleton, 1899 - 316 pagini |
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Pagina 1
... primitive functions ? Section 1. Rudimentary organs 1. Animals . ( 1 ) Muscles of the ear in man . abdomen and appendages in deep - sea hermit crabs 2. Plants . ( 1 ) Hermaphrodite flowers in Melandryum . ( 2 ) Branches of Colletia ...
... primitive functions ? Section 1. Rudimentary organs 1. Animals . ( 1 ) Muscles of the ear in man . abdomen and appendages in deep - sea hermit crabs 2. Plants . ( 1 ) Hermaphrodite flowers in Melandryum . ( 2 ) Branches of Colletia ...
Pagina 19
... primitive man . On the other hand , we find cases where the individual development of an institution or society is a mere repetition of the development through which similar institutions and societies of other epochs and places have ...
... primitive man . On the other hand , we find cases where the individual development of an institution or society is a mere repetition of the development through which similar institutions and societies of other epochs and places have ...
Pagina 26
... when cultivated on dry land . The epidermis is furnished with stomata and the constituent cells contain no chlorophyll . The organ does not , however , lose its primitive 26 UNIVERSALITY OF DEGENERATIVE EVOLUTION (4) Individual adaptation.
... when cultivated on dry land . The epidermis is furnished with stomata and the constituent cells contain no chlorophyll . The organ does not , however , lose its primitive 26 UNIVERSALITY OF DEGENERATIVE EVOLUTION (4) Individual adaptation.
Pagina 27
... primitive and typical characters . Actual organic transforma- tion cannot , therefore , be said to take place in the case of individual adaptation . The same leaves of the same plant when grown in water are much longer than those of the ...
... primitive and typical characters . Actual organic transforma- tion cannot , therefore , be said to take place in the case of individual adaptation . The same leaves of the same plant when grown in water are much longer than those of the ...
Pagina 28
... primitive and typical organs . no pieces are joined by an oblique segment , the trabeculae in this seg- ment follow the direction from whence comes the greatest strain , a different direction to that which they would have taken had the ...
... primitive and typical organs . no pieces are joined by an oblique segment , the trabeculae in this seg- ment follow the direction from whence comes the greatest strain , a different direction to that which they would have taken had the ...
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