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 21
... sides , ( Dor- sibranchiates . ) 1 c . Those who have no exterior gills , like the earth - worm ( Abranchiates , ) and also the Intestinal Worms . III . The department of MOLLUSKS is divided into three INTRODUCTION . 21.
... sides , ( Dor- sibranchiates . ) 1 c . Those who have no exterior gills , like the earth - worm ( Abranchiates , ) and also the Intestinal Worms . III . The department of MOLLUSKS is divided into three INTRODUCTION . 21.
Pagina 51
... sides , without moving the head . The eyes are usually protected by lids , which are two in the mammals , and generally furnished with a range of hairs at their edges , called eye - lashes . Birds have a third lid , which is vertical ...
... sides , without moving the head . The eyes are usually protected by lids , which are two in the mammals , and generally furnished with a range of hairs at their edges , called eye - lashes . Birds have a third lid , which is vertical ...
Pagina 52
... sides of the head . 83. The snail and kindred animals have , in like manner , only two eyes , mounted on the tip of a long stalk , ( the tentacle , ) or situated at its base , or on a short pedestal by its side . Their struc- ture is ...
... sides of the head . 83. The snail and kindred animals have , in like manner , only two eyes , mounted on the tip of a long stalk , ( the tentacle , ) or situated at its base , or on a short pedestal by its side . Their struc- ture is ...
Pagina 54
... side by side , five or six times as long as they are broad , and arranged like rays around the optic nerve , from which each one receives a little filament , so as to present , according to Müller , the following disposition . Fig . 18 ...
... side by side , five or six times as long as they are broad , and arranged like rays around the optic nerve , from which each one receives a little filament , so as to present , according to Müller , the following disposition . Fig . 18 ...
Pagina 61
... side of a central band . As the perfection of smell depends on the amount of surface exposed , it follows that those fishes which have these folds most multiplied are also those in which this sense is most acute . 111. No special ...
... side of a central band . As the perfection of smell depends on the amount of surface exposed , it follows that those fishes which have these folds most multiplied are also those in which this sense is most acute . 111. No special ...
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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...