First Book of ZoölogyD. Appleton, 1875 - 190 páginas |
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Página iii
... growth , and other leading features concerning the common animals of the country . Particular attention has been ... lines . The necessity of the pupils copying ( however poorly )
... growth , and other leading features concerning the common animals of the country . Particular attention has been ... lines . The necessity of the pupils copying ( however poorly )
Página ix
... Lines of Growth , Growth of a Shell , 5 , 6 . CHAPTER II . FRESH - WATER SNAILS Where and how to collect , 7 , 8 ; Live Shells , 8 ; Head , Tentacles , Foot , how they breathe , 9 , 10 ; Operculum , 12 ; Gills , 13 . CHAPTER III . LAND ...
... Lines of Growth , Growth of a Shell , 5 , 6 . CHAPTER II . FRESH - WATER SNAILS Where and how to collect , 7 , 8 ; Live Shells , 8 ; Head , Tentacles , Foot , how they breathe , 9 , 10 ; Operculum , 12 ; Gills , 13 . CHAPTER III . LAND ...
Página 5
... lines are called lines of growth . FIG . 7. - SHOWING LINES OF GROWTH RUNNING PARALLEL TO THE EDGE OF THE APERTURE . The shell is increased in size by successive layers of shelly matter added to the borders of the aperture . In this way ...
... lines are called lines of growth . FIG . 7. - SHOWING LINES OF GROWTH RUNNING PARALLEL TO THE EDGE OF THE APERTURE . The shell is increased in size by successive layers of shelly matter added to the borders of the aperture . In this way ...
Página 12
... lines will be seen marking the operculum , and these are the lines of growth , the operculum growing around the outer edge by successive additions , just as the shell grows by successive additions to its outer margin . The Western ...
... lines will be seen marking the operculum , and these are the lines of growth , the operculum growing around the outer edge by successive additions , just as the shell grows by successive additions to its outer margin . The Western ...
Página 14
... grow in size by suc- cessive additions of limy matter deposited around the free border of the aperture , and that the ... lines of accretion , or lines of growth . CHAPTER III . LAND SNAILS . 13. THERE are many other species of snails ...
... grow in size by suc- cessive additions of limy matter deposited around the free border of the aperture , and that the ... lines of accretion , or lines of growth . CHAPTER III . LAND SNAILS . 13. THERE are many other species of snails ...
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Palavras e frases frequentes
551 Broadway abdomen adductor animal antennæ aperture appearance appendages APPLETON attached beetle bird bivalves body bones breathe air butterfly called canker-worm caterpillar cephalo-thorax chrysalis clam claws collected common compound eyes crab crawfish crawling creature creeping disk crustaceans deposit edge eggs examine eyes flattened following figure represents foot fresh-water mussels fresh-water snails gills grass grasshopper hatch head hind-leg hinder insects jaws jointed legs labium land snails larva larvæ Let the pupils ligament lines of growth lobster mandibles mantle maxillæ metatarsus moults mouth mouth-parts muscles mussel myriopods natural nests number of segments operculum oyster pairs of legs palpi palpus portion Price Prof pupa salamander salt-water seen separate shed shell showing side siphon skin species specimens spiders spinnerets spiracles stages surface tentacles thorax thread true insects tube valves vertebral vertebral column wings worms young