A manual of zoologyWilliam Blackwood & Sons, 1878 |
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Resultados 1-5 de 77
Página vii
... true basis of classification ; but in this view the author unfortunately is at present hardly prepared to concur ... true key to taxonomy , he would have no guarantee that he might not be called upon to fundamentally alter his ...
... true basis of classification ; but in this view the author unfortunately is at present hardly prepared to concur ... true key to taxonomy , he would have no guarantee that he might not be called upon to fundamentally alter his ...
Página 20
... true import of this law that the theory arose , that every animal in its development passed through a series of stages in which it resembles , in turn , the different inferior members of the animal scale . With regard to man , standing ...
... true import of this law that the theory arose , that every animal in its development passed through a series of stages in which it resembles , in turn , the different inferior members of the animal scale . With regard to man , standing ...
Página 22
... true , at any rate , that " homomorphous " forms are generally found in different parts of the earth's surface . Thus , the place of the Cacti of South America is taken by the Euphorbiæ of Africa ; or , to take a zoological illustration ...
... true , at any rate , that " homomorphous " forms are generally found in different parts of the earth's surface . Thus , the place of the Cacti of South America is taken by the Euphorbiæ of Africa ; or , to take a zoological illustration ...
Página 24
... true points of difference and likeness amongst animals ; and we have already seen that these are morphological type and specialisation of function . Philosophical classification , therefore , is a formal expression of the facts and laws ...
... true points of difference and likeness amongst animals ; and we have already seen that these are morphological type and specialisation of function . Philosophical classification , therefore , is a formal expression of the facts and laws ...
Página 30
... true generative act . The processes by which this is effected vary in different animals , and are all spoken of as forms of asexual " " agamic " reproduction ( " agamogenesis " ) . As we shall see , however , the true " individual " is ...
... true generative act . The processes by which this is effected vary in different animals , and are all spoken of as forms of asexual " " agamic " reproduction ( " agamogenesis " ) . As we shall see , however , the true " individual " is ...
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Outras edições - Ver tudo
Manual of Zoology ...: With a General Introduction on the Principles of Zoology Henry Alleyne Nicholson Pré-visualização indisponível - 2015 |
Palavras e frases frequentes
abdomen adult alimentary canal ambulacral amongst animal Annelides antennæ anus aperture appendages Arachnida articulated attached birds bivalve body bones Brachiopoda branchiæ branchial calcareous carapace cavity cephalothorax chitinous ciliated composed comprising consists contractile Crustacea Ctenophora developed disc distinct division dorsal embryo Eocene external extinct extremity feet females fins fishes Foraminifera fossil furnished gemmation genera genus gills head horny Huxley Hydrozoa incisors Insects integument intestine known labium larva larvæ legs limbs living locomotive males Mammals mandibles margin maxillæ membrane molars Mollusca mouth nervous system operculum organs ovum Owen pairs Paleozoic parasitic placed plates polypide polypites Polyzoa portion possess posterior present regarded reproductive Reptiles resembling respiratory Rotifera rudimentary Scolecida segments shell side Silurian single skeleton sometimes somites species spines stomach structure sub-order surface tail teeth tentacles termed thorax toes transverse tube upper usually valves ventral Vertebrates vesicle whilst wings Zoantharia zooids