The Physical Basis of SocietyD. Appleton, 1916 - 406 من الصفحات |
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الصفحة ix
... tion of 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 ...
... tion of 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 x
... emphasis on " unit characters " ; 66 Mendelian Laws . " DeVries and his idea of 66 Muta- tion " ; Weismann and his denial of the inheritance of PAGE 97 149 191 CHAPTER 66 acquired characters . " Recent discoveries . The X CONTENTS.
... emphasis on " unit characters " ; 66 Mendelian Laws . " DeVries and his idea of 66 Muta- tion " ; Weismann and his denial of the inheritance of PAGE 97 149 191 CHAPTER 66 acquired characters . " Recent discoveries . The X CONTENTS.
الصفحة xii
... tion checking favorable variation and creating an artificial rather than a natural condition ? Is science and philanthropy preserving unfavorable types which tend to reproduce faster than the superior and will in time , therefore ...
... tion checking favorable variation and creating an artificial rather than a natural condition ? Is science and philanthropy preserving unfavorable types which tend to reproduce faster than the superior and will in time , therefore ...
الصفحة xiii
... new conditions . Crystalliza- tion of institutions . Neither race nor environment alone account for civilization . The failure of panaceas . INDEX PAGE • 397 LIST OF ILLUSTRATIONS Annual march of temperature in continental and CONTENTS ...
... new conditions . Crystalliza- tion of institutions . Neither race nor environment alone account for civilization . The failure of panaceas . INDEX PAGE • 397 LIST OF ILLUSTRATIONS Annual march of temperature in continental and CONTENTS ...
الصفحة 15
... tion . In the tropics one finds the characteristic plants with broad leaves and naked buds , of great size and continuous growth - a veritable riot of profusion , with woods so full of undergrowth that travel is difficult . Further ...
... tion . In the tropics one finds the characteristic plants with broad leaves and naked buds , of great size and continuous growth - a veritable riot of profusion , with woods so full of undergrowth that travel is difficult . Further ...
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acre Africa America appeared Asia average bacteria beetles believe birds body breeding carbon carbon dioxid carnivora cattle cause cent century changes characters chromosomes civilization climate color considered crops cultivated Darwin death destroyed discovered discoveries disease early earth eggs elements elm-leaf beetle environment Europe European evidence evolution existence fact favorable feeble-minded female fish forms germ cells groups growth hence heredity Hessian fly human Ibid important Inasmuch inches increase individuals influence inheritance insects Kallikak Family killed known Lamarck large numbers larvæ less living lower malaria male man's mated natural selection nature normal organisms ovum oxygen parents physical plants and animals population possible produced race reason seeds smallpox social society soil species square mile substances survive temperature theory thought tion trees tropics tuberculosis United women yellow yellow fever