Evolution by Atrophy in Biology and SociologyD. Appleton, 1899 - 316 pagini |
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Pagina
... flowers ( Brassica oleracea var . Botrytis ) . 3. Progressive degeneration of the pro- thallus in phanerogams Chapter II . The path of degeneration in sociology § 1. Investigation of facts 1. Tithings , hundreds and counties in England ...
... flowers ( Brassica oleracea var . Botrytis ) . 3. Progressive degeneration of the pro- thallus in phanerogams Chapter II . The path of degeneration in sociology § 1. Investigation of facts 1. Tithings , hundreds and counties in England ...
Pagina 1
... flowers in Melandryum . ( 2 ) Branches of Colletia cruciata , Crataegus , Vicia Faba , Sempervivum , Veronica , etc. Section II . Rudimentary institutions . 233 237 ( 1 ) Truck system and clearing - house . ( 2 ) Corpora- tions and ...
... flowers in Melandryum . ( 2 ) Branches of Colletia cruciata , Crataegus , Vicia Faba , Sempervivum , Veronica , etc. Section II . Rudimentary institutions . 233 237 ( 1 ) Truck system and clearing - house . ( 2 ) Corpora- tions and ...
Pagina 2
... flowers ) and of stamens ( Scrophulariacea ) § 2. Atrophy from lack of use 1. Functional inutility : ( 1 ) Etiolated plants and immobile limbs . ( 2 ) Epicotyl and primary leaf of Nymphaea . ( 3 ) Roots of Utricularia ; coty- ledons of ...
... flowers ) and of stamens ( Scrophulariacea ) § 2. Atrophy from lack of use 1. Functional inutility : ( 1 ) Etiolated plants and immobile limbs . ( 2 ) Epicotyl and primary leaf of Nymphaea . ( 3 ) Roots of Utricularia ; coty- ledons of ...
Pagina 3
... flowers of Ficaria ranuncu- loïdes , Lysimachia Nummularia , Elodea canadensis , stratiotes aloides , cleistogamous flowers , eyes in the male Machaerites § 2. Unfunctional organs which persist as rudiments 1. Absence of variation ...
... flowers of Ficaria ranuncu- loïdes , Lysimachia Nummularia , Elodea canadensis , stratiotes aloides , cleistogamous flowers , eyes in the male Machaerites § 2. Unfunctional organs which persist as rudiments 1. Absence of variation ...
Pagina 23
... flowering plants ? What were the eyes of the first vertebrates like ? Did these organs develop from existing organs ful- filling other functions , or were they formed inde- pendently ? However that may be , if they arose from other ...
... flowering plants ? What were the eyes of the first vertebrates like ? Did these organs develop from existing organs ful- filling other functions , or were they formed inde- pendently ? However that may be , if they arose from other ...
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