The Physical Basis of SocietyD.Appleton, 1928 - 526 من الصفحات |
من داخل الكتاب
النتائج 1-5 من 44
الصفحة 3
... trees , got glimpses of them but we do not know what he thought about them . At some far later time the " watchman upon the mountain tops , " " the shepherds keeping watch over their flocks by night , " began the careful observations ...
... trees , got glimpses of them but we do not know what he thought about them . At some far later time the " watchman upon the mountain tops , " " the shepherds keeping watch over their flocks by night , " began the careful observations ...
الصفحة 47
... trees in Louisiana may be draped in Spanish moss . In the desert , moisture is conserved in the fleshy leaves of cactus or , as in other cases , the roots of the shrubs extend a considerable distance about the plant and are near the ...
... trees in Louisiana may be draped in Spanish moss . In the desert , moisture is conserved in the fleshy leaves of cactus or , as in other cases , the roots of the shrubs extend a considerable distance about the plant and are near the ...
الصفحة 50
... trees or eat the poisonous plants passed by under normal conditions . Horses will scrape away three feet of snow to get at grass , while the cattle perish . The blizzard may bring death to thousands of sheep . The deer will be more ...
... trees or eat the poisonous plants passed by under normal conditions . Horses will scrape away three feet of snow to get at grass , while the cattle perish . The blizzard may bring death to thousands of sheep . The deer will be more ...
الصفحة 54
... tree will appreciate the action of the wind . Exposure to or protection from various winds decidedly affects the value of land for agriculture . Farmers in Nebraska have often seen a promising field of corn or oats ruined in a day by a ...
... tree will appreciate the action of the wind . Exposure to or protection from various winds decidedly affects the value of land for agriculture . Farmers in Nebraska have often seen a promising field of corn or oats ruined in a day by a ...
الصفحة 56
... trees . Stone cutters , coal- miners , men who work in the dust of the streets , breathe in so much foreign matter that their lungs are coated , and they are made susceptible to the attacks of germ diseases if 56 THE PHYSICAL BASIS OF ...
... trees . Stone cutters , coal- miners , men who work in the dust of the streets , breathe in so much foreign matter that their lungs are coated , and they are made susceptible to the attacks of germ diseases if 56 THE PHYSICAL BASIS OF ...
المحتوى
| 347 | |
| 356 | |
| 357 | |
| 362 | |
| 374 | |
| 375 | |
| 391 | |
| 406 | |
| 151 | |
| 178 | |
| 183 | |
| 202 | |
| 209 | |
| 237 | |
| 269 | |
| 276 | |
| 295 | |
| 323 | |
| 424 | |
| 430 | |
| 438 | |
| 449 | |
| 465 | |
| 478 | |
| 481 | |
| 503 | |
| 511 | |
طبعات أخرى - عرض جميع المقتطفات
عبارات ومصطلحات مألوفة
acres Africa alloy America appears areas Asia atoms average bacteria birds black bass body carbon carbon dioxide cattle cause cells Cenozoic cent century changes chemical chlorophyll climate coal common compounds crops cultivated culture death rate destroy disease distribution domestic animals early earth eaten eggs elements enemies Europe evidence fact fish forms germ germ cells hawk heat horse human hydrogen Ibid important increase Indian insects iron killed known land later light live man's metals mice migration miles moth native nature neolithic nitrogen ocean organisms oxygen Pará rubber tree parasites plants and animals population pounds produce protoplasm R. S. LULL race regions rodents season seeds seems sharp-shinned hawk sheep soil South South America species square mile substances sugar supply surface survive tarpan temperature thousand tion to-day trees tropics types United wild