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
... sanguinolentus , ) showing the changes of the yolk , ( e ; ) the formation of the pedicle , ( r ; ) and the gradual change into the pentagonal and rayed form . FIG . 150. Comatula , a West India species , EXPLANATION OF THE FIGURES . 15.
... sanguinolentus , ) showing the changes of the yolk , ( e ; ) the formation of the pedicle , ( r ; ) and the gradual change into the pentagonal and rayed form . FIG . 150. Comatula , a West India species , EXPLANATION OF THE FIGURES . 15.
Pagina 16
... species , in its early stage , with its stem 151. The same detached , and swimming free . 152. Longitudinal section of the sturgeon , to show its cartilaginous ver- tebral column . 153. Amphioxus , natural size , showing its imperfect ...
... species , in its early stage , with its stem 151. The same detached , and swimming free . 152. Longitudinal section of the sturgeon , to show its cartilaginous ver- tebral column . 153. Amphioxus , natural size , showing its imperfect ...
Pagina 17
... idea of what is meant by the terms genus and species ; and although the most common of all others , they are not the easiest to be clearly understood . The Genus is founded upon some of the minor peculiarities of anat 、 2 * INTRODUCTION.
... idea of what is meant by the terms genus and species ; and although the most common of all others , they are not the easiest to be clearly understood . The Genus is founded upon some of the minor peculiarities of anat 、 2 * INTRODUCTION.
Pagina 18
... Species is founded upon less important distinctions , such as color , size , proportions , sculpture , & c . Thus we have different kinds , or species , of duck , different species of squirrel , different species of monkey , & c ...
... Species is founded upon less important distinctions , such as color , size , proportions , sculpture , & c . Thus we have different kinds , or species , of duck , different species of squirrel , different species of monkey , & c ...
Pagina 24
... species . In general , however , they are exceedingly minute , and exhibit the simplest forms of animal life , and are now grouped together , under the title of Protozoa . But , as they are still very imperfectly understood ...
... species . In general , however , they are exceedingly minute , and exhibit the simplest forms of animal life , and are now grouped together , under the title of Protozoa . But , as they are still very imperfectly understood ...
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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...