Principles of Zoölogy: Touching the Structure, Development, Distribution, and Natural Arrangement of the Races of Animals, Living and Extinct : with Numerous Illustrations : Part I : Comparative Physiology for the Use of Schools and CollegesGould and Lincoln, 1854 - 250 pagina's |
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Pagina 11
... Radiates below , as being the lowest in rank . Each of these compartments is again subdivided to include the different classes belonging to it , which are named at the outer circle . At the centre is placed a figure to represent the ...
... Radiates below , as being the lowest in rank . Each of these compartments is again subdivided to include the different classes belonging to it , which are named at the outer circle . At the centre is placed a figure to represent the ...
Pagina 12
... Radiates , as found in Scutella , ( Echinarachnius parma . ) 13. Section of the eye . a , optic nerve ; b , sclerotic coat ; c , choroid coat ; d , retina ; e , crystalline lens ; ƒ , cornea ; g , iris ; h , vitreous body ; i , chamber ...
... Radiates , as found in Scutella , ( Echinarachnius parma . ) 13. Section of the eye . a , optic nerve ; b , sclerotic coat ; c , choroid coat ; d , retina ; e , crystalline lens ; ƒ , cornea ; g , iris ; h , vitreous body ; i , chamber ...
Pagina 19
... Radiates . I. The department of VERTEBRATES includes all animals which have an internal skeleton , with a back - bone for its axis . It is divided into four classes : 1. Mammals , ( animals which nurse their young . ) 2. Birds . 3 ...
... Radiates . I. The department of VERTEBRATES includes all animals which have an internal skeleton , with a back - bone for its axis . It is divided into four classes : 1. Mammals , ( animals which nurse their young . ) 2. Birds . 3 ...
Pagina 23
... RADIATES is divided into three classes : 1. Sea - urchins , bearing spines upon the surface , ( Echin- oderms , ) figs . 12 , 26 . 2. Jelly - fishes , ( Acalephs , ) fig . 31 . 3. Polyps , fixed like plants , and with a series of ...
... RADIATES is divided into three classes : 1. Sea - urchins , bearing spines upon the surface , ( Echin- oderms , ) figs . 12 , 26 . 2. Jelly - fishes , ( Acalephs , ) fig . 31 . 3. Polyps , fixed like plants , and with a series of ...
Pagina 28
... radiating point which throws additional light on all around it ; so that , as the picture is enlarged , it at the same time becomes more intelligible to those who are competent to seize its promi- nent traits . 9. To give a detailed ...
... radiating point which throws additional light on all around it ; so that , as the picture is enlarged , it at the same time becomes more intelligible to those who are competent to seize its promi- nent traits . 9. To give a detailed ...
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adapted albumen allantois Ammonites Animal Kingdom appear aquatic arteries Articulata Articulates auricles become belong birds blood body bones brain branches called canal carboniferous cartilaginous cavity cells Cercaria chorion chyle circulation classes composed containing crabs Crinoids crustaceans crystalline lens cuttle-fish digestive distinct Distoma distribution divided Echinoderms eggs embryo enclosed epoch fauna female fishes fluid formation fossils frog furnished Gasteropods germ germinative vesicle gills head heart higher Illustrations important Infusoria insects intestine jaws jelly-fishes layer less limbs living lower lungs magnified mals mammals metamorphoses mode mollusks muscles namely natural nerves nervous system oxygen peculiar period plants Polyps portion Radiates regions reptiles resemblance respiration respiratory organs Rhizodonts rocks SECTION seen showing Silurian similar skin species star-fishes structure surface teeth temperate tentacles terrestrial animals Tertiary tion tissues trachea tropical types upper vegetative ventricle vertebrated animals vesicle White-fish whole worms yolk young Zoology