A manual of zoologyWilliam Blackwood & Sons, 1878 |
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Side vii
... young animal can have the same general value in classification - for the purposes , at any rate , of ordi- nary students - as have the characters drawn from the fully developed organism . In the third place , if the author had here ...
... young animal can have the same general value in classification - for the purposes , at any rate , of ordi- nary students - as have the characters drawn from the fully developed organism . In the third place , if the author had here ...
Side 20
... young Gasteropod ( amongst the Mollusca ) transiently presents all the essential characters which permanently distinguish the adult Pteropod . The development of the Gasteropod , however , pro- ceeds beyond this point , and the adult is ...
... young Gasteropod ( amongst the Mollusca ) transiently presents all the essential characters which permanently distinguish the adult Pteropod . The development of the Gasteropod , however , pro- ceeds beyond this point , and the adult is ...
Side 23
... young . Why an animal with only one condyle on its occipital bone should not suckle its young we do not know , and perhaps we shall at some future time find mam- mary glands associated with a single occipital condyle . Most of these ...
... young . Why an animal with only one condyle on its occipital bone should not suckle its young we do not know , and perhaps we shall at some future time find mam- mary glands associated with a single occipital condyle . Most of these ...
Side 24
... young whale is born in a compa- ratively helpless condition , and that its mother is provided with special mammary glands for its support ; this expressing a fundamental distinction from all fishes , and being associated with other ...
... young whale is born in a compa- ratively helpless condition , and that its mother is provided with special mammary glands for its support ; this expressing a fundamental distinction from all fishes , and being associated with other ...
Side 30
... young . Even amongst hermaphrodite plants , where self - fecundation . may , and certainly does , occur , provisions seem to exist by which perpetual self - fertilisation is prevented , and the influence of another individual secured at ...
... young . Even amongst hermaphrodite plants , where self - fecundation . may , and certainly does , occur , provisions seem to exist by which perpetual self - fertilisation is prevented , and the influence of another individual secured at ...
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Manual of Zoology ...: With a General Introduction on the Principles of Zoology Henry Alleyne Nicholson Ingen forhåndsvisning tilgjengelig - 2015 |
Vanlige uttrykk og setninger
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