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, 1859 - 250 pagina's |
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Pagina 11
... divided by radiating lines into four segments , to include the four great departments of the Animal Kingdom ; the Vertebrates , with Man at their head , are placed in the upper compartment , the Articulates at the left , the Mollusks at ...
... divided by radiating lines into four segments , to include the four great departments of the Animal Kingdom ; the Vertebrates , with Man at their head , are placed in the upper compartment , the Articulates at the left , the Mollusks at ...
Pagina 12
... divided by the iris . 14. Diagram , showing the effect of the eye on rays of light . 15. Position of the eye of the snail . 16. Eyes ( ocelli ) of the spider . 17. Eye - spots of a star - fish , ( Echinaster sanguinolentus . ) 18 ...
... divided by the iris . 14. Diagram , showing the effect of the eye on rays of light . 15. Position of the eye of the snail . 16. Eyes ( ocelli ) of the spider . 17. Eye - spots of a star - fish , ( Echinaster sanguinolentus . ) 18 ...
Pagina 15
... divided in two layers , the serous layer , ( s , ) and the mucous layer , ( m . ) 130. The mucous layer ( m ) expands over nearly half of the yolk , and be- comes covered with many little fringes . 131. The embryo ( e ) is seen ...
... divided in two layers , the serous layer , ( s , ) and the mucous layer , ( m . ) 130. The mucous layer ( m ) expands over nearly half of the yolk , and be- comes covered with many little fringes . 131. The embryo ( e ) is seen ...
Pagina 19
... 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. Reptiles . 4. Fishes . The class of MAMMALS INTRODUCTION . 19.
... 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. Reptiles . 4. Fishes . The class of MAMMALS INTRODUCTION . 19.
Pagina 20
... divided into four orders , namely , a . Perching Birds , ( Insessores . ) b . Climbers , ( Scansores . ) c . Waders , ( Grallatores . ) d . Swimmers , ( Natatores . ) The class of REPTILES is divided into five orders : a . Large ...
... divided into four orders , namely , a . Perching Birds , ( Insessores . ) b . Climbers , ( Scansores . ) c . Waders , ( Grallatores . ) d . Swimmers , ( Natatores . ) The class of REPTILES is divided into five orders : a . Large ...
Overige edities - Alles bekijken
Veelvoorkomende woorden en zinsdelen
albumen allantois Ammonites Animal Kingdom appear aquatic arteries Articulata Articulates auricles become belong birds blood body bones brain branches called canal carboniferous Carnivora cartilaginous cavity cells Cercaria chyle classes cloth composed contains corresponding crabs crustaceans crystalline lens cuttle-fish digestive distinct Distoma distribution divided Echinoderms eggs embryo enclosed epoch fauna fishes fluid formation fossils frog furnished Gasteropods geological germ germinative germinative vesicle gills head heart Illustrations important Infusoria insects intestine jaws jelly-fishes layer less limbs living lower lungs magnified mals mammals membrane 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 shell 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
Populaire passages
Pagina 189 - Experiments of dredging in very deep water have also taught us that the abyss of the ocean is nearly a desert. Not only are no materials found there for sustenance, but it is doubtful if animals could sustain the pressure of so great a column of water, although many of them are provided with a system of pores, (260,) which enables them to sustain a much greater pressure than terrestrial animals. America, one species takes...