Evolution by Atrophy in Biology and SociologyD. Appleton, 1899 - 316 pagini |
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Pagina
... appendages ) 30 The cray - fish 31 § 3. Transformation of homologous organs in individuals of different species ( limbs ) . 41 Limbs adapted to an aquatic life ( Ceratodus , Ortha- canthus , Protopterus amphibius , Protopterus annec ...
... appendages ) 30 The cray - fish 31 § 3. Transformation of homologous organs in individuals of different species ( limbs ) . 41 Limbs adapted to an aquatic life ( Ceratodus , Ortha- canthus , Protopterus amphibius , Protopterus annec ...
Pagina 1
... appendages in deep - sea hermit crabs 2. Plants . ( 1 ) Hermaphrodite flowers in Melandryum . ( 2 ) Branches of Colletia cruciata , Crataegus , Vicia Faba , Sempervivum , Veronica , etc. Section II . Rudimentary institutions . 233 237 ...
... appendages in deep - sea hermit crabs 2. Plants . ( 1 ) Hermaphrodite flowers in Melandryum . ( 2 ) Branches of Colletia cruciata , Crataegus , Vicia Faba , Sempervivum , Veronica , etc. Section II . Rudimentary institutions . 233 237 ...
Pagina 30
... appendages of the cray - fish form an extremely interesting study of this kind . The parts of a bone do not unite ... appendages of the different metameres ( the somites , or 30 UNIVERSALITY OF DEGENERATIVE EVOLUTION Transformation of ...
... appendages of the cray - fish form an extremely interesting study of this kind . The parts of a bone do not unite ... appendages of the different metameres ( the somites , or 30 UNIVERSALITY OF DEGENERATIVE EVOLUTION Transformation of ...
Pagina 31
... appendage of the 3rd abdominal fluviatilis . Left Take first the abdominal segments , segment of the they carry appendages ( fig . 3 ) formed female ( 1,5 / 1 ) of the three fundamental parts : the pr , protopodite ; ex , en , exopoditi ...
... appendage of the 3rd abdominal fluviatilis . Left Take first the abdominal segments , segment of the they carry appendages ( fig . 3 ) formed female ( 1,5 / 1 ) of the three fundamental parts : the pr , protopodite ; ex , en , exopoditi ...
Pagina 32
... appendage which has degenerated is the podobranch , which has completely disappeared . The reason is obvious ; these ap ... appendages of the sixth abdominal segment are greatly modified into a caudal fin ( fig . 4 ) . This also exhibits ...
... appendage which has degenerated is the podobranch , which has completely disappeared . The reason is obvious ; these ap ... appendages of the sixth abdominal segment are greatly modified into a caudal fin ( fig . 4 ) . This also exhibits ...
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