A manual of zoologyWilliam Blackwood & Sons, 1878 |
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Página ii
... whilst it is complete and exact enough for the student , need not be too dull or too technical for the perusal of the public . " STANDARD . " In the present volume the fossils are discussed historically , as regards their relation to ...
... whilst it is complete and exact enough for the student , need not be too dull or too technical for the perusal of the public . " STANDARD . " In the present volume the fossils are discussed historically , as regards their relation to ...
Página 1
... whilst the second is occupied with the investigation of the nature and relations of all bodies which exhibit life . The former department concerns the geologist and mineralogist , and secondarily the naturalist proper as well ; the ...
... whilst the second is occupied with the investigation of the nature and relations of all bodies which exhibit life . The former department concerns the geologist and mineralogist , and secondarily the naturalist proper as well ; the ...
Página 6
... whilst they show no tendency to pass through periodical changes of state . On the other hand , living bodies exhibit distinct actions , and are pre - eminently characterised by their tendency to pass through a series of cyclical changes ...
... whilst they show no tendency to pass through periodical changes of state . On the other hand , living bodies exhibit distinct actions , and are pre - eminently characterised by their tendency to pass through a series of cyclical changes ...
Página 7
... Whilst the nature of life thus does not admit of rigid defini- tion , we find that the phenomena of vitality can only be mani- fested under certain conditions , some of these being intrinsic and indispensable , whilst others are ...
... Whilst the nature of life thus does not admit of rigid defini- tion , we find that the phenomena of vitality can only be mani- fested under certain conditions , some of these being intrinsic and indispensable , whilst others are ...
Página 11
... whilst it rejects the remainder . In the present state of our knowledge , therefore , we must conclude that even in the process of digestion , as exhibited in the Amoeba , there is some- thing that is not merely physical or chemical ...
... whilst it rejects the remainder . In the present state of our knowledge , therefore , we must conclude that even in the process of digestion , as exhibited in the Amoeba , there is some- thing that is not merely physical or chemical ...
Índice
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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