Evolution by Atrophy in Biology and SociologyD. Appleton, 1899 - 316 pagini |
Din interiorul cărții
Rezultatele 1 - 5 din 22
Pagina 24
... lateral branches of the axis cylinder ; e , development ganglionic of protoplasmic outgrowths of the protoplasm of nerve - cell and nerve . ( Ramon y Cajal . ) cell of the cortex of the human brain , passes successively through stages ...
... lateral branches of the axis cylinder ; e , development ganglionic of protoplasmic outgrowths of the protoplasm of nerve - cell and nerve . ( Ramon y Cajal . ) cell of the cortex of the human brain , passes successively through stages ...
Pagina 40
... ( pr . ) . The long - ringed process is the endopodite , while the lateral scale of the antenna represents a much reduced exopodite ( ex . ) . The antennule ( fig . 16 ) consists of a 40 UNIVERSALITY OF DEGENERATIVE EVOLUTION.
... ( pr . ) . The long - ringed process is the endopodite , while the lateral scale of the antenna represents a much reduced exopodite ( ex . ) . The antennule ( fig . 16 ) consists of a 40 UNIVERSALITY OF DEGENERATIVE EVOLUTION.
Pagina 41
... lateral folds which still persist in Amphioxus , and which pro- bably existed in the ancestors of vertebrates.1 1 A. Morphological proofs : ( a ) Lateral folds of amphioxus . ( b ) Identity of the skeletons of paired and unpaired fins ...
... lateral folds which still persist in Amphioxus , and which pro- bably existed in the ancestors of vertebrates.1 1 A. Morphological proofs : ( a ) Lateral folds of amphioxus . ( b ) Identity of the skeletons of paired and unpaired fins ...
Pagina 42
... lateral rods consisted of parallel rods of a tough material . By the transformation of these rods , the skeleton of the limbs of vertebrates was ultimately formed . The skeleton of limbs then consisted originally of a certain number of ...
... lateral rods consisted of parallel rods of a tough material . By the transformation of these rods , the skeleton of the limbs of vertebrates was ultimately formed . The skeleton of limbs then consisted originally of a certain number of ...
Pagina 43
... lateral rods of one half almost completely disappear ( as in ( Protopterus Amphibius ) . Next , the other half follows ( as in P. annecteus ) ( fig . 19 ) , and finally only the principal rod remains ( as in Lepidosiren ) ( fig . 20 ) ...
... lateral rods of one half almost completely disappear ( as in ( Protopterus Amphibius ) . Next , the other half follows ( as in P. annecteus ) ( fig . 19 ) , and finally only the principal rod remains ( as in Lepidosiren ) ( fig . 20 ) ...
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