The Physical Basis of SocietyD.Appleton, 1928 - 526 من الصفحات |
من داخل الكتاب
النتائج 6-10 من 100
الصفحة 41
... causing a decrease of the residual carbon of the lungs . People with heart trouble find altitudes over 5,000 feet dangerous . In time readaptation may come with an increase of perhaps 50 per cent in the number of red blood corpuscles ...
... causing a decrease of the residual carbon of the lungs . People with heart trouble find altitudes over 5,000 feet dangerous . In time readaptation may come with an increase of perhaps 50 per cent in the number of red blood corpuscles ...
الصفحة 50
... cause the dreaded snow blind- ness . Snow may bury the food supply and cause animals to at- tack trees or eat the poisonous plants passed by under normal conditions . Horses will scrape away three feet of snow to get at grass , while ...
... cause the dreaded snow blind- ness . Snow may bury the food supply and cause animals to at- tack trees or eat the poisonous plants passed by under normal conditions . Horses will scrape away three feet of snow to get at grass , while ...
الصفحة 54
... cause more rapid conduction of the heat from the bodies of animals and thus render them more sensible to lower temperatures , or cause pleasant sensations if the tem- perature is high . To some extent they influence the distri- bution ...
... cause more rapid conduction of the heat from the bodies of animals and thus render them more sensible to lower temperatures , or cause pleasant sensations if the tem- perature is high . To some extent they influence the distri- bution ...
الصفحة 64
... cause en- hancing the first , because when it comes to a question of light and cold , nature makes no mistake , but selects a color to exclude the light . Hence in all cold countries , i.e. , steppes , plains , and the arctics , there ...
... cause en- hancing the first , because when it comes to a question of light and cold , nature makes no mistake , but selects a color to exclude the light . Hence in all cold countries , i.e. , steppes , plains , and the arctics , there ...
الصفحة 70
... cause frostbite or even death . It is quite possible that the development of men in different parts of the world will vary somewhat . " We can hardly err in attributing the great lung capacity , massive chests and abnor- mally large ...
... cause frostbite or even death . It is quite possible that the development of men in different parts of the world will vary somewhat . " We can hardly err in attributing the great lung capacity , massive chests and abnor- mally large ...
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