The Physical Basis of SocietyD. Appleton, 1916 - 406 من الصفحات |
من داخل الكتاب
الصفحة x
... diseases . Recent dis- coveries of the causes of disease and methods by which it is spread . A sketch of the warfare against tuber- culosis , small - pox , cancer . The outlook . Tests of control in man's health and length of life ...
... diseases . Recent dis- coveries of the causes of disease and methods by which it is spread . A sketch of the warfare against tuber- culosis , small - pox , cancer . The outlook . Tests of control in man's health and length of life ...
الصفحة xii
... disease , contraceptive measures in restricting reproduction . Effect on human physical evolution of inventions , surgical skill , war , religion , charity , social castes , industry , etc. Is inven- tion checking favorable variation ...
... disease , contraceptive measures in restricting reproduction . Effect on human physical evolution of inventions , surgical skill , war , religion , charity , social castes , industry , etc. Is inven- tion checking favorable variation ...
الصفحة 21
... disease and the types carry- ing the disease flourish . In Africa the sleeping sickness is carried by the tsetse fly inhabiting the banks of streams and ponds . Malaria disappears in the Middle West when the marshes are drained and ...
... disease and the types carry- ing the disease flourish . In Africa the sleeping sickness is carried by the tsetse fly inhabiting the banks of streams and ponds . Malaria disappears in the Middle West when the marshes are drained and ...
الصفحة 22
... diseases and new carriers of disease ; and ( 5 ) it may be the means of erecting new forest barriers to migration , or new forest migration tracts for certain carnivora , such as the bears . " The last clauses call at- tention to the ...
... diseases and new carriers of disease ; and ( 5 ) it may be the means of erecting new forest barriers to migration , or new forest migration tracts for certain carnivora , such as the bears . " The last clauses call at- tention to the ...
الصفحة 24
... disease was discovered , that yellow fever stopped with the oncoming of frosts in the fall . The whale breathes air , yet cannot live out of water . This 13 MERRIAM , C. H. 14 MERRIAM , C. H. Life Zones and Crop Zones , pp . 54-55 . In ...
... disease was discovered , that yellow fever stopped with the oncoming of frosts in the fall . The whale breathes air , yet cannot live out of water . This 13 MERRIAM , C. H. 14 MERRIAM , C. H. Life Zones and Crop Zones , pp . 54-55 . In ...
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