Evolution by Atrophy in Biology and SociologyD. Appleton, 1899 - 316 pagini |
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Pagina
... Transformation of organs of animals 1274 7 22 *** 23 23 25 ( 4 ) Individual adaptation 26 30 § 2. Transformation of homodynamic organs in the indivi- dual ( metameric appendages ) 30 The cray - fish 31 § 3. Transformation of homologous ...
... Transformation of organs of animals 1274 7 22 *** 23 23 25 ( 4 ) Individual adaptation 26 30 § 2. Transformation of homodynamic organs in the indivi- dual ( metameric appendages ) 30 The cray - fish 31 § 3. Transformation of homologous ...
Pagina 2
... transformed to spines in Phyllocactus crenatus . ( 4 ) Atrophy of the branchial arches in mammals . ( 5 ) Atrophy of ventral fins ( Pediculati , Protopterus ) . ( 6 ) Atrophy of muscles ( Cetacea , Sirenia ) . ( 7 ) Atrophy of the tail ...
... transformed to spines in Phyllocactus crenatus . ( 4 ) Atrophy of the branchial arches in mammals . ( 5 ) Atrophy of ventral fins ( Pediculati , Protopterus ) . ( 6 ) Atrophy of muscles ( Cetacea , Sirenia ) . ( 7 ) Atrophy of the tail ...
Pagina 12
... transformed into a set of individuals capable of maintaining a separate existence , and no longer in connection with one another . ( b ) Among the Choanoflagellates , some consist of free individuals , while in others all the ...
... transformed into a set of individuals capable of maintaining a separate existence , and no longer in connection with one another . ( b ) Among the Choanoflagellates , some consist of free individuals , while in others all the ...
Pagina 23
... transformation . Having once been formed , it would develop and improve , and this process would not necessarily have been attended by partial degeneration . 2. Development of organs in the individual . - In the course of embryological ...
... transformation . Having once been formed , it would develop and improve , and this process would not necessarily have been attended by partial degeneration . 2. Development of organs in the individual . - In the course of embryological ...
Pagina 28
... transformation " of these organs into fresh structures exhibiting other characters than those of primitive and typical organs . no pieces are joined by an oblique segment , the trabeculae in this seg- ment follow the direction from ...
... transformation " of these organs into fresh structures exhibiting other characters than those of primitive and typical organs . no pieces are joined by an oblique segment , the trabeculae in this seg- ment follow the direction from ...
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