Principles of Zoölogy: Touching the Structure, Development, Distribution, and Natural Arrangement of the Races of Animals, Living and Extinct ... Pt. I. Comparative Physiology. For the Use of Schools and Colleges, Deel 1Gould and Lincoln, 1870 - 250 pagina's |
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Pagina 7
... 36 SECTION III . Differences between Animals and Plants 41 CHAPTER THIRD . FUNCTIONS AND ORGANS OF ANIMAL LIFE 44 SECTION I. Of the Nervous System and General Sensation 44 Of the Special Senses 1. Of Sight 2. Of Hearing.
... 36 SECTION III . Differences between Animals and Plants 41 CHAPTER THIRD . FUNCTIONS AND ORGANS OF ANIMAL LIFE 44 SECTION I. Of the Nervous System and General Sensation 44 Of the Special Senses 1. Of Sight 2. Of Hearing.
Pagina 12
... Nervous fibres , showing the loops as they terminate in the skin of a frog . 7. Gray substance of the brain , magnified . 8 ... nerves to the muscular fibres . 26. Test . or crust - like covering of an Echinoderm , ( Cidaris . ) FIG 27 ...
... Nervous fibres , showing the loops as they terminate in the skin of a frog . 7. Gray substance of the brain , magnified . 8 ... nerves to the muscular fibres . 26. Test . or crust - like covering of an Echinoderm , ( Cidaris . ) FIG 27 ...
Pagina 31
... nervous system . 20. Again , we have a means of appreciating the relative grade of animals by the comparative study of their devel- opment . It is evident that the caterpillar , in becoming a butterfly , passes from a lower to a higher ...
... nervous system . 20. Again , we have a means of appreciating the relative grade of animals by the comparative study of their devel- opment . It is evident that the caterpillar , in becoming a butterfly , passes from a lower to a higher ...
Pagina 39
... nervous tissue is of different kinds . nerves proper , it is composed of very delicate fibres , which return back at their extremities , and form loops , as shown in figure 6 , representing nervous threads as they terminate in the skin ...
... nervous tissue is of different kinds . nerves proper , it is composed of very delicate fibres , which return back at their extremities , and form loops , as shown in figure 6 , representing nervous threads as they terminate in the skin ...
Pagina 40
... nerve , brain , and membranes , but also bloodves- sels , glands , pigments , & c . Let us , however , examine it during the embryonic state , while it is yet in the egg , and we find that the whole head is made up of cells which differ ...
... nerve , brain , and membranes , but also bloodves- sels , glands , pigments , & c . Let us , however , examine it during the embryonic state , while it is yet in the egg , and we find that the whole head is made up of cells which differ ...
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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 chyle classes cloth composed containing crabs Cretaceous crustaceans crystalline lens cuttle-fish digestive distinct Distoma distribution Echinoderms eggs embryo epoch fauna fishes fluid formation fossils frog furnished Gasteropods genera germ germinative vesicle gills groups head heart important Infusoria insects intestine jaws jelly-fishes layer legs less limbs living lower lungs magnified mals mammals membrane metamorphoses mode mollusks monkey motion muscles namely natural nerves oxygen Paleozoic peculiar period plants Polyps portion Radiata regions reproduction reptiles resemblance respiration respiratory organs Rhizodonts rocks sea-urchins SECTION shell showing Silurian similar skin species star-fishes stomach structure surface teeth temperate tentacles terrestrial animals Tertiary tion tissues trachea tropical tubes types vegetable ventricle Vertebrates vesicle vessels White-fish whole worms yolk young Zoology