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 15
... division . 134. Polyps , showing the same . 135. A chain of Salpæ . 136. An individual salpa ; m , the mouth ; a , embryos . 137. Cercaria , or early form of the Distoma . 138. Distoma , with its two suckers . 139. Nurse of the Cercaria ...
... division . 134. Polyps , showing the same . 135. A chain of Salpæ . 136. An individual salpa ; m , the mouth ; a , embryos . 137. Cercaria , or early form of the Distoma . 138. Distoma , with its two suckers . 139. Nurse of the Cercaria ...
Pagina 18
... divisions , or departments , of the Animal Kingdom . For each of these groups , whether larger or smaller , we involuntarily picture in our minds an image , made up of the traits which characterize the group . This ideal image is called ...
... divisions , or departments , of the Animal Kingdom . For each of these groups , whether larger or smaller , we involuntarily picture in our minds an image , made up of the traits which characterize the group . This ideal image is called ...
Pagina 19
... divisions , which we call DEPARTMENTS , namely : I. The department of Vertebrates . II . The department of Articulates . III . The department of Mollusks . IV . The department of Radiates . I. The department of VERTEBRATES includes all ...
... divisions , which we call DEPARTMENTS , namely : I. The department of Vertebrates . II . The department of Articulates . III . The department of Mollusks . IV . The department of Radiates . I. The department of VERTEBRATES includes all ...
Pagina 72
... division of the Animal Kingdom where the nervous system is much less developed than that of the ver- tebrates , since they have only ganglions , without a proper brain . There is even a certain antagonism between instinct and ...
... division of the Animal Kingdom where the nervous system is much less developed than that of the ver- tebrates , since they have only ganglions , without a proper brain . There is even a certain antagonism between instinct and ...
Pagina 132
... divisions : the ovip- arous , comprising those which lay eggs , such as birds , reptiles , fishes , insects , mollusks , & c . , and the viviparous , which bring forth their young alive , like the mammalia , and a few from other orders ...
... divisions : the ovip- arous , comprising those which lay eggs , such as birds , reptiles , fishes , insects , mollusks , & c . , and the viviparous , which bring forth their young alive , like the mammalia , and a few from other orders ...
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...