 | Thomas Robert Malthus - 1809 - 576 頁
...expected. the increase of population and food. In the next twenty-five years, it is impossible to suppose that the produce could be quadrupled. It would be...improvement of the barren parts would be a work of time and labor ; and it must be evident to those who have the slightest acquaintance with agricultural subjects,... | |
 | William Barker Daniel - 1813 - 568 頁
...could be doubled in thejirst Twenty-Jive Years, in the next Twenty-Jive, it is impossible to conclude, that the Produce could be Quadrupled, it would be contrary to all knowledge of the Properties of Land. Let it then be supposed, that the Yearly Additions, which might... | |
 | William Barker Daniel - 1813 - 820 頁
...be doubled in t\\G first Twenty-Jive Years, in the next Twenty-Jive, it is impossible to conclude, that the Produce could be Quadrupled, it would be contrary to all knowledge of the Properties of Land. Let it then be supposed, that the Yearly Additions, which might... | |
 | William Blackwood - 1841 - 646 頁
...then, would it be possible to quadruple it within the succeeding twenty-five. He maintains that this would be contrary to all our knowledge of the properties of land. To improve barren parts requires time and labour; and those conversant with agriculture are aware,... | |
 | Sir George Kettilby Rickards - 1854 - 308 頁
...production. " To assume," he says, " that the produce of the land could be doubled twice in fifty years, would be contrary to all our knowledge of the properties of land. The improvement of the barren parts could be a work of time and labour ; and it must be evident to those who have the slightest acquaintance... | |
 | sir George Kettilby Rickards - 1854 - 316 頁
...production. " To assume," he says, " that the produce of the land could be doubled twice in fifty years, would be contrary to all our knowledge of the properties of land. The improvement of the K barren parts could be a work of time and labour ; and it must be evident to those who have the slightest... | |
 | Francis Bowen - 1856 - 590 頁
...increase than could with reason be expected. In the next twenty-five years, it is impossible to suppose that the produce could be quadrupled. It would be...improvement of the barren parts would be a work of time and labor ; and it must be evident to those who have the slightest acquaintance with agricultural subjects,... | |
 | Francis Bowen - 1859 - 586 頁
...increase than could with reason be expected. In the next twenty-five years, it is impossible to suppose that the produce could be quadrupled. It would be...improvement of the barren parts would be a work of time and labor ; and it must be evident to those who have the slightest acquaintance with agricultural subjects,... | |
 | Francis Bowen - 1859 - 576 頁
...increase than could with reason be expected. In the next twenty-five years, it is impossible to suppose that the produce could be quadrupled. It would be...improvement of the barren parts would be a work of time and labor ; and it must be evident to those who have the slightest acquaintance with agricultural subjects,... | |
 | George Drysdale - 1861 - 616 頁
...increase thau could with reason be expected. In the next twenty-five years it is impossible to suppose, that the produce could be quadrupled. It would be...contrary to all our knowledge of the properties of land. That we may be the better able to compare the increase of population and food, let us make a supposition,... | |
| |
In the next twenty-five years, it is impossible to suppose that the produce could be quadrupled. It would be contrary to all our knowledge of the properties of land. 
