The Physical Basis of SocietyD. Appleton, 1916 - 406 من الصفحات |
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الصفحة vii
... Inasmuch as no one can claim to have first hand information on so many subjects the reader is likely to wonder if the facts are as represented . I have preferred the second method , therefore , and have quoted freely from the best works ...
... Inasmuch as no one can claim to have first hand information on so many subjects the reader is likely to wonder if the facts are as represented . I have preferred the second method , therefore , and have quoted freely from the best works ...
الصفحة 12
... Inasmuch as plants must have certain chemicals it is evident that the fertility of the soil depends in part upon the amount of these present . If one essential is lacking , growth is checked , no matter how abundant the other elements ...
... Inasmuch as plants must have certain chemicals it is evident that the fertility of the soil depends in part upon the amount of these present . If one essential is lacking , growth is checked , no matter how abundant the other elements ...
الصفحة 17
... inasmuch as the water absorbs oxygen at the surface . This must be carried to lower levels if fish are to survive . These currents are not well known today . The air currents are less thoroughly understood , though great progress has ...
... inasmuch as the water absorbs oxygen at the surface . This must be carried to lower levels if fish are to survive . These currents are not well known today . The air currents are less thoroughly understood , though great progress has ...
الصفحة 18
... Inasmuch as all life depends upon water , the question of rainfall is one of extreme importance . The annual average of seven to ten inches makes general agriculture possible , provided that the rain comes at the right time . A much ...
... Inasmuch as all life depends upon water , the question of rainfall is one of extreme importance . The annual average of seven to ten inches makes general agriculture possible , provided that the rain comes at the right time . A much ...
الصفحة 35
... inasmuch as the blood gets more oxygen and gives off more carbon dioxid . 4. Physiological Effects . - In spite of the considerable overlapping with the purely physical effects it seems wise to consider certain types of influences under ...
... inasmuch as the blood gets more oxygen and gives off more carbon dioxid . 4. Physiological Effects . - In spite of the considerable overlapping with the purely physical effects it seems wise to consider certain types of influences under ...
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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