First Book of ZoölogyD. Appleton, 1875 - 190 páginas |
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Página x
... Tubes separate , 44 ; Oysters , 45 ; Heart , Palpi , Liver , Gills , Mouth of Oyster , 46 , 47 ; Relations between Clams , Mussels , and Snails , 48 . PAGE 37 CHAPTER VII . COLLECTING INSECTS How to collect and arrange , 49 ; To make ...
... Tubes separate , 44 ; Oysters , 45 ; Heart , Palpi , Liver , Gills , Mouth of Oyster , 46 , 47 ; Relations between Clams , Mussels , and Snails , 48 . PAGE 37 CHAPTER VII . COLLECTING INSECTS How to collect and arrange , 49 ; To make ...
Página xii
... Tube - building Worms , 159 . . 153 CHAPTER XXI . CONCERNING NATURAL GROUPS Characters of Articulates , 160 ; Of Worms and Mollusks , 161 ; Type Characters , 161 ; Typical Animals , 162 ; Systematic Tables and Classification , 163 ...
... Tube - building Worms , 159 . . 153 CHAPTER XXI . CONCERNING NATURAL GROUPS Characters of Articulates , 160 ; Of Worms and Mollusks , 161 ; Type Characters , 161 ; Typical Animals , 162 ; Systematic Tables and Classification , 163 ...
Página 31
... , with arrows drawn to indicate the direction of the currents of water . In some small species of fresh - water bivalves , the excur- rent and incurrent orifices are prolonged into tubes , and FRESH - WATER MUSSELS . 31.
... , with arrows drawn to indicate the direction of the currents of water . In some small species of fresh - water bivalves , the excur- rent and incurrent orifices are prolonged into tubes , and FRESH - WATER MUSSELS . 31.
Página 32
... tubes are prominent , and the foot is long and tongue - shaped , and the animal is very active in crawling about ; also in Fig . 14 K and Z represent two of these small animals with bi- valve shells . FIG . 37 . 30. The foot of these ...
... tubes are prominent , and the foot is long and tongue - shaped , and the animal is very active in crawling about ; also in Fig . 14 K and Z represent two of these small animals with bi- valve shells . FIG . 37 . 30. The foot of these ...
Página 38
... tubes . In the clam the tubes are inclosed in one sheath . The clam can protrude this apparatus to a length equal- ing that of the shell two or three times . As the clam lives buried at some depth below the level of the sand 38 FIRST ...
... tubes . In the clam the tubes are inclosed in one sheath . The clam can protrude this apparatus to a length equal- ing that of the shell two or three times . As the clam lives buried at some depth below the level of the sand 38 FIRST ...
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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