The Physical Basis of SocietyD. Appleton, 1916 - 406 من الصفحات |
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الصفحة ix
... birds or other animal friends . Illustrations from recent changes in America . Government regula- tion of importation and transportation of plants and animals and of killing of migratory birds . The neces- sity of an intelligent ...
... birds or other animal friends . Illustrations from recent changes in America . Government regula- tion of importation and transportation of plants and animals and of killing of migratory birds . The neces- sity of an intelligent ...
الصفحة 15
... birds are replaced by those of simpler dress ; toucan and parrot yield to spar- row and grouse . In the world of water , sponge and coral are replaced by oyster and lobster ; the ocean ferns by kelp . Hence we divide the plants in our ...
... birds are replaced by those of simpler dress ; toucan and parrot yield to spar- row and grouse . In the world of water , sponge and coral are replaced by oyster and lobster ; the ocean ferns by kelp . Hence we divide the plants in our ...
الصفحة 23
... birds could easily spend winter north of the 40 ° latitude if the food supply were adequate . Robins , blackbirds , meadow larks , turtle doves and others occasionally remain in mild winters in greatly reduced numbers . The codfish have ...
... birds could easily spend winter north of the 40 ° latitude if the food supply were adequate . Robins , blackbirds , meadow larks , turtle doves and others occasionally remain in mild winters in greatly reduced numbers . The codfish have ...
الصفحة 27
... birds fly and man walks or runs . It is evident that this coördina- tion has not been produced by the organisms themselves , consciously at least . In the main , they do what they do because of what they are . In the case of lower types ...
... birds fly and man walks or runs . It is evident that this coördina- tion has not been produced by the organisms themselves , consciously at least . In the main , they do what they do because of what they are . In the case of lower types ...
الصفحة 46
... birds , while every rotten log or hollow tree literally teems with dormant life . " The animal lives in an environment which is con- stantly changing . Its spontaneous movements are con- stantly bringing it into different conditions ...
... birds , while every rotten log or hollow tree literally teems with dormant life . " The animal lives in an environment which is con- stantly changing . Its spontaneous movements are con- stantly bringing it into different conditions ...
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