The Universal Preceptor: Being a General Grammar of Arts, Sciences, and Useful Knowledge ...A. Phelps, 1826 - 312 страница |
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Страница 8
... consists generally of the skins of animals , or of the natural products of vegetables , without preparation or the in- tervention of art . 19. A precarious mode of subsistence is so unfav- ourable to the human species , that , it is ...
... consists generally of the skins of animals , or of the natural products of vegetables , without preparation or the in- tervention of art . 19. A precarious mode of subsistence is so unfav- ourable to the human species , that , it is ...
Страница 11
... consist of two much of one kind of material , do not hold moisture , or arc two shallow . They are fertile , when they contain a due mixture of several primitive earths with vegetable and animal matter . 36. To render a barren soil ...
... consist of two much of one kind of material , do not hold moisture , or arc two shallow . They are fertile , when they contain a due mixture of several primitive earths with vegetable and animal matter . 36. To render a barren soil ...
Страница 16
... consists chiefly of com- mons or heaths ; and it is computed , that four millions of them are equal to any purpose of cultivation ; the other three , are in mountains ; or have no depth of vegetable soil . 63. The number of bullocks ...
... consists chiefly of com- mons or heaths ; and it is computed , that four millions of them are equal to any purpose of cultivation ; the other three , are in mountains ; or have no depth of vegetable soil . 63. The number of bullocks ...
Страница 18
... consist of a mixture of earth and metal , and which are called ores . 1 70. Gold - dust is frequently found in the sand of rivers ; whither it is washed by the rains from the mountains . This itself might lead to the discovery of metals ...
... consist of a mixture of earth and metal , and which are called ores . 1 70. Gold - dust is frequently found in the sand of rivers ; whither it is washed by the rains from the mountains . This itself might lead to the discovery of metals ...
Страница 19
... consist of gold , silver , & c . see paragraph in anoth- er part of the work for further particulars . 78. Many metals exposed to the air become dusty ; that is to say , they imbibe a part of the air called oxy- gen , and the rust is ...
... consist of gold , silver , & c . see paragraph in anoth- er part of the work for further particulars . 78. Many metals exposed to the air become dusty ; that is to say , they imbibe a part of the air called oxy- gen , and the rust is ...
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