First Book of ZoölogyD. Appleton, 1875 - 190 páginas |
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Página x
... Air - tubes , 92 ; How Insects breathe , and how some rest , 93 ; Sounds produced by Insects , 94 ; Stridulation of Grasshopper , 95 , 96 . 49 53 65 71 85 89 CHAPTER XIII . HABITS AND STRUCTURE OF INSECTS ( continued X CONTENTS .
... Air - tubes , 92 ; How Insects breathe , and how some rest , 93 ; Sounds produced by Insects , 94 ; Stridulation of Grasshopper , 95 , 96 . 49 53 65 71 85 89 CHAPTER XIII . HABITS AND STRUCTURE OF INSECTS ( continued X CONTENTS .
Página 9
... air . The snail ac- complishes this by raising the outer edge of the aperture to the water's edge , and then opening ... breathe air . In doing so they first expel a bubble of air , which may be seen escaping from FRESH - WATER SNAILS . 9.
... air . The snail ac- complishes this by raising the outer edge of the aperture to the water's edge , and then opening ... breathe air . In doing so they first expel a bubble of air , which may be seen escaping from FRESH - WATER SNAILS . 9.
Página 10
... t t . Tentacles . e e , Eyes . b , Breathing - orifice . m , Mouth . t е е t FIG . 13. — A FRESH - WATER SNAIL SEEN FROM ABOVE , FROM THE SIDE , AND FROM BELOW . These fresh - water air - breathing snails may be 10 FIRST BOOK OF ZOOLOGY .
... t t . Tentacles . e e , Eyes . b , Breathing - orifice . m , Mouth . t е е t FIG . 13. — A FRESH - WATER SNAIL SEEN FROM ABOVE , FROM THE SIDE , AND FROM BELOW . These fresh - water air - breathing snails may be 10 FIRST BOOK OF ZOOLOGY .
Página 11
... breathing air : A and C are taking in air ; Bis just expelling a bubble of air from the lung ; D is crawling on the surface of the water ; E , G , and I , are in the act of crawling up , to get a fresh supply of air ; and Jis a water ...
... breathing air : A and C are taking in air ; Bis just expelling a bubble of air from the lung ; D is crawling on the surface of the water ; E , G , and I , are in the act of crawling up , to get a fresh supply of air ; and Jis a water ...
Página 13
... air - breathers , and came to the surface of the water at intervals to breathe air . He has studied other fresh - water snails which did not breathe air directly , but performed this function by means of 1If the class is sufficiently ...
... air - breathers , and came to the surface of the water at intervals to breathe air . He has studied other fresh - water snails which did not breathe air directly , but performed this function by means of 1If the class is sufficiently ...
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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