The Physical Basis of SocietyD.Appleton, 1928 - 526 من الصفحات |
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الصفحة 20
... square miles extending practically from its old mouth at Cairo , Illinois to the Gulf where it is now depositing some 113,000,000 tons of silt yearly and extending its delta at the rate of a mile in sixteen years . This delta is so ...
... square miles extending practically from its old mouth at Cairo , Illinois to the Gulf where it is now depositing some 113,000,000 tons of silt yearly and extending its delta at the rate of a mile in sixteen years . This delta is so ...
الصفحة 68
... square mile . But the desert areas of Egypt comprise 335,000 of the 347,000 square miles of the country and have about one inhabitant for every three square miles while the Nile Valley 68 THE PHYSICAL BASIS OF SOCIETY World Population.
... square mile . But the desert areas of Egypt comprise 335,000 of the 347,000 square miles of the country and have about one inhabitant for every three square miles while the Nile Valley 68 THE PHYSICAL BASIS OF SOCIETY World Population.
الصفحة 69
Carl Kelsey. inhabitant for every three square miles while the Nile Valley has about 1,100 per square mile . Similar contrasts , though seldom so striking , are found in all countries . Even a rela- tively small area like one of our ...
Carl Kelsey. inhabitant for every three square miles while the Nile Valley has about 1,100 per square mile . Similar contrasts , though seldom so striking , are found in all countries . Even a rela- tively small area like one of our ...
الصفحة 135
... square mile , and if each bird consumes one ounce of seed per day , the total destruction to weed seeds from September Ist to April 30th in those states alone will be 1341 tons . " 11 The little tree sparrow winters in Iowa in great ...
... square mile , and if each bird consumes one ounce of seed per day , the total destruction to weed seeds from September Ist to April 30th in those states alone will be 1341 tons . " 11 The little tree sparrow winters in Iowa in great ...
الصفحة 151
... square mile as compared with one hundred in Germany and one hundred and sixty in Holland . Uruguay has eight cattle to the inhabitant as compared to two persons per cow in the United States . Since cattle are sacred in India neither ...
... square mile as compared with one hundred in Germany and one hundred and sixty in Holland . Uruguay has eight cattle to the inhabitant as compared to two persons per cow in the United States . Since cattle are sacred in India neither ...
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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