The Physical Basis of SocietyD.Appleton, 1928 - 526 من الصفحات |
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الصفحة 15
... pounds of air containing about 18 pounds of argon for example . In addition it contains large amounts of water vapor as well as quantities of dust of THE EARTH AND ITS ELEMENTS 15.
... pounds of air containing about 18 pounds of argon for example . In addition it contains large amounts of water vapor as well as quantities of dust of THE EARTH AND ITS ELEMENTS 15.
الصفحة 17
... pounds at all complicated in chemical structure can exist in equilibrium , and for those compounds of many hundreds of atoms , which are characteristic of life , the range is narrowly limited . This note cannot be too strongly sounded ...
... pounds at all complicated in chemical structure can exist in equilibrium , and for those compounds of many hundreds of atoms , which are characteristic of life , the range is narrowly limited . This note cannot be too strongly sounded ...
الصفحة 21
... pounds per hundredweight . To have taken this amount of salt from the land and transferred it to the ocean has required from one to two hundred million years . Great Salt Lake in Utah is but the salty remnant of the vast fresh - water ...
... pounds per hundredweight . To have taken this amount of salt from the land and transferred it to the ocean has required from one to two hundred million years . Great Salt Lake in Utah is but the salty remnant of the vast fresh - water ...
الصفحة 22
... would mean that in time the elements necessary for plant food would be carried away and the land rendered sterile . Of the 272 pounds mentioned above as taken from each acre about 5.79 22 THE PHYSICAL BASIS OF SOCIETY.
... would mean that in time the elements necessary for plant food would be carried away and the land rendered sterile . Of the 272 pounds mentioned above as taken from each acre about 5.79 22 THE PHYSICAL BASIS OF SOCIETY.
الصفحة 23
Carl Kelsey. pounds mentioned above as taken from each acre about 5.79 are potash and 0.54 pounds phosphoric acid . Yet there is abundant evidence that many old soils are fertile . The only answer must be that new supplies are brought in ...
Carl Kelsey. pounds mentioned above as taken from each acre about 5.79 are potash and 0.54 pounds phosphoric acid . Yet there is abundant evidence that many old soils are fertile . The only answer must be that new supplies are brought in ...
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acres Africa America appears areas Asia atoms average bacteria believe birds body carbon carbon dioxide cause cent century cephalic index changes characters chromosomes civilization climate color common copper crops cultivated culture danger Darwin death rate destroy disease domestic early earth eggs environment Europe European evidence fact feeble-minded females fish forms germ cells given heredity human Ibid important increase Indians individual inheritance insane insects iron killed known land later light living male man's marriage metals miles natural selection nature Negro neolithic organisms ovum oxygen Pará rubber tree parasites physical population possible pounds present problems produced R. S. LULL race seeds seems social South South America species square mile supply T. H. MORGAN temperature things thousand tion to-day trees tropics types United wild woman women