The Physical Basis of SocietyD. Appleton, 1916 - 406 من الصفحات |
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الصفحة xi
... color of hair , eyes and skin . Stature , head forms . The study of brain weights . The attempt to find correlations between physical characteristics and civilization or the possibility thereof . Difficulty of finding a pure race ...
... color of hair , eyes and skin . Stature , head forms . The study of brain weights . The attempt to find correlations between physical characteristics and civilization or the possibility thereof . Difficulty of finding a pure race ...
الصفحة xv
... Color inheritance in guinea pigs Suggested explanation of color inheritance in guinea pigs . 204 59 · · • · 136 · • • 141 199 199 201 Diagram of sex - limited inheritance 210 The relations between successive generations . • • • · 220 ...
... Color inheritance in guinea pigs Suggested explanation of color inheritance in guinea pigs . 204 59 · · • · 136 · • • 141 199 199 201 Diagram of sex - limited inheritance 210 The relations between successive generations . • • • · 220 ...
الصفحة 12
... color and little fruit . Different plants make different demands upon the soil . When the grains languish , while sorrel and oxeye daisy thrive , it is found that nitrogen is lacking . Recently we learned that the essential but not ...
... color and little fruit . Different plants make different demands upon the soil . When the grains languish , while sorrel and oxeye daisy thrive , it is found that nitrogen is lacking . Recently we learned that the essential but not ...
الصفحة 14
... colors from red at the lower end to violet at the upper . Experiment has revealed that red and yellow light pro- mote the assimilation of carbon dioxid . Under such light plants prosper as the following shows : ( Mimosa pudica ) ...
... colors from red at the lower end to violet at the upper . Experiment has revealed that red and yellow light pro- mote the assimilation of carbon dioxid . Under such light plants prosper as the following shows : ( Mimosa pudica ) ...
الصفحة 34
... color to exclude the light . Hence in all cold , light countries , i.e. , steppes , plains and the arctics , there is pigmentation of a color in the lower end of the spectrum , red or yellow , with varia- tions of brown , olive or ...
... color to exclude the light . Hence in all cold , light countries , i.e. , steppes , plains and the arctics , there is pigmentation of a color in the lower end of the spectrum , red or yellow , with varia- tions of brown , olive or ...
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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