First Book of ZoölogyD. Appleton, 1875 - 190 páginas |
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Página 19
... number of little eggs . These eggs will be white and round , about the size of a pin's - head . By careful tending , that is , by keeping the leaves slightly moist , the eggs will hatch out tiny snails , and these will LAND SNAILS . 19.
... number of little eggs . These eggs will be white and round , about the size of a pin's - head . By careful tending , that is , by keeping the leaves slightly moist , the eggs will hatch out tiny snails , and these will LAND SNAILS . 19.
Página 20
Edward Sylvester Morse. eggs will hatch out tiny snails , and these will attain half their mature size the first season . a 96 FIG . 23 .-- a , Eggs of Land Snail ; b , Young Snail just hatched ; c , Young Snail somewhat advanced : b and ...
Edward Sylvester Morse. eggs will hatch out tiny snails , and these will attain half their mature size the first season . a 96 FIG . 23 .-- a , Eggs of Land Snail ; b , Young Snail just hatched ; c , Young Snail somewhat advanced : b and ...
Página 72
... hatch from them in the course of a few weeks , and these may be fed on the young leaves of the elm - tree . Eggs of other insects may be found on fences , leaves , and twigs of plants ; also on the leaves of the squash - vine , and ...
... hatch from them in the course of a few weeks , and these may be fed on the young leaves of the elm - tree . Eggs of other insects may be found on fences , leaves , and twigs of plants ; also on the leaves of the squash - vine , and ...
Página 74
... a box , there will hatch from them little animals resembling worms , very tiny at first , but growing rapidly if supplied with appropriate food . Insects generally lay their eggs in such places 74 FIRST BOOK OF ZOÖLOGY .
... a box , there will hatch from them little animals resembling worms , very tiny at first , but growing rapidly if supplied with appropriate food . Insects generally lay their eggs in such places 74 FIRST BOOK OF ZOÖLOGY .
Página 76
... hatch out just as the leaves commence to grow , and con- sequently the young worms have tender leaves to feed on at the outset . The worm grows rapidly , and after a few weeks ceases feeding , and , dropping to the ground , or lowering ...
... hatch out just as the leaves commence to grow , and con- sequently the young worms have tender leaves to feed on at the outset . The worm grows rapidly , and after a few weeks ceases feeding , and , dropping to the ground , or lowering ...
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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