The Physical Basis of SocietyD.Appleton, 1928 - 526 من الصفحات |
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الصفحة 115
... early labor contracts of south- eastern Pennsylvania and neighboring states it was stipulated that the workers would not be served with such common food as shad or canvasback duck more than once or twice a week . The salmon was the ...
... early labor contracts of south- eastern Pennsylvania and neighboring states it was stipulated that the workers would not be served with such common food as shad or canvasback duck more than once or twice a week . The salmon was the ...
الصفحة 116
... early in the nineteenth century . In 1798 , a 16 - foot dam was built at Miller's River about 100 miles from the mouth of the Connecticut . The salmon re- mained common for two or three years below the dam but after ten years they had ...
... early in the nineteenth century . In 1798 , a 16 - foot dam was built at Miller's River about 100 miles from the mouth of the Connecticut . The salmon re- mained common for two or three years below the dam but after ten years they had ...
الصفحة 118
... early days and occasionally wrought havoc in some densely populated colony during the nesting season , the birds were not seriously harmed until the invention of the shotgun . Then man began to kill for food , later for decoration ...
... early days and occasionally wrought havoc in some densely populated colony during the nesting season , the birds were not seriously harmed until the invention of the shotgun . Then man began to kill for food , later for decoration ...
الصفحة 120
... early accounts read like fiction . A single flight was estimated to contain 2,230 , - 272,000 birds . The last known wild bird was killed in Michigan in 1908 and the last one in captivity died in the Cincinnati Zoological Garden ...
... early accounts read like fiction . A single flight was estimated to contain 2,230 , - 272,000 birds . The last known wild bird was killed in Michigan in 1908 and the last one in captivity died in the Cincinnati Zoological Garden ...
الصفحة 127
... early as 1770 in Connecticut the army worm damaged grain crops to such an extent that a local writer said : " Had it not been for the pumpkins which were exceedingly abundant , and potatoes , the people would have suffered greatly for ...
... early as 1770 in Connecticut the army worm damaged grain crops to such an extent that a local writer said : " Had it not been for the pumpkins which were exceedingly abundant , and potatoes , the people would have suffered greatly for ...
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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