The Principles of Science Applied to the Domestic and Mechanic Arts: And to Manufactures and Agriculture: with Reflections on the Progress of the Arts, and Their Influence on National WelfareMarsh, Capen, Lyon, and Webb, 1841 - 432 頁 |
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第 1 到 5 筆結果,共 22 筆
第 46 頁
... lime , it will be in the proportion of 8 + 1 = 9 † ( which is the sum of hy- drogen and oxygen ) to 20 + 8 = 28 which represent the proportions of calcium and oxygen in lime . It is also a law of chemical combination , that the ...
... lime , it will be in the proportion of 8 + 1 = 9 † ( which is the sum of hy- drogen and oxygen ) to 20 + 8 = 28 which represent the proportions of calcium and oxygen in lime . It is also a law of chemical combination , that the ...
第 109 頁
... lime . Is it asked , what kind of limestone should be employed , in any given case ? A simple chemical test will enable us to resolve the doubt . The value of chemistry will become more apparent , however , if we attend a little to the ...
... lime . Is it asked , what kind of limestone should be employed , in any given case ? A simple chemical test will enable us to resolve the doubt . The value of chemistry will become more apparent , however , if we attend a little to the ...
第 110 頁
... lime and potass , which must enter more or less into the composition of all plants , and are in some the principal constituents . These , then , being the food of plants , it becomes the object of the farmer to procure the most ample ...
... lime and potass , which must enter more or less into the composition of all plants , and are in some the principal constituents . These , then , being the food of plants , it becomes the object of the farmer to procure the most ample ...
第 112 頁
... lime , in its various forms of quicklime , chalk , gyp- sum , & c . & c . Which of these is to be employed on a piece of land depends , of course , on the nature of the soil , and the plants to be reared . If the soil be defi- cient in ...
... lime , in its various forms of quicklime , chalk , gyp- sum , & c . & c . Which of these is to be employed on a piece of land depends , of course , on the nature of the soil , and the plants to be reared . If the soil be defi- cient in ...
第 113 頁
... lime and potass enter into the composition of plants , as may be proved by reducing them to ashes , which will ... lime , of quicklime , & c . In the preference of one of these manures to another , we must be determined by the nature ...
... lime and potass enter into the composition of plants , as may be proved by reducing them to ashes , which will ... lime , of quicklime , & c . In the preference of one of these manures to another , we must be determined by the nature ...
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acid affinity agents agriculture alkali animal applied arts bleaching body called carbonic acid chemical chlorine clay cloth Colchester color combined compound copies copper cotton crops cultivation cylinder earth Eddystone lighthouse effect elective affinity employed enable engine England English engraved equal exert farmer fibres fluid force glass gravity greater hand heat Hence human humic acid hundred husbandry important improvement inclined plane increased industry invention iron Julius Cæsar knowledge labor land laws less lime liquid machine machinery manufacture manure materials means mechanical mechanical philosophy ment metal millions motion mould moving Nature object operation oxygen philosophy piston plants plate pounds present pressure principles printing produce proportion quantity raised rendered rollers salt Scotland side soil solid specific gravity spinning steam stone substances sulphuric acid surface thousand thread tion ture turnips vegetable velocity vessel weaving weft weight wheel wire
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第 275 頁 - Americans will pay, which the exhausted state of the continent renders very unlikely ; and because it was well worth while to incur a loss upon the first exportation, in order, by the glut, to stifle in the cradle those rising manufactures in the United States, which the war had forced into existence contrary to the natural course of things.
第 394 頁 - It has lengthened life; it has mitigated pain; it has extinguished diseases; it has increased the fertility of the soil; it has given new securities to the mariner; it has furnished new arms to the warrior; it has spanned great rivers and estuaries with bridges of form unknown to our fathers; it has guided the thunderbolt innocuously from heaven to earth; it has lighted up the night with the splendor of the day; it has extended the range of the K/man vision; it has multiplied the power of the human...
第 346 頁 - ... as well lodged as the lord of the town : so well were they contented. Pillows, they said, were thought meet only for women in childbed : as for servants, if they had any sheet above them, it was well : for seldom had they any under their bodies, to keep them from the pricking straws, that ran oft through the canvass, and rased their hardened hides.
第 350 頁 - C two hundred thousand people begging from door to door^ These are not only no way advantageous, but a very grievous burden to so poor a country. And though the number of them be perhaps double to what it was formerly, by reason of...
第 394 頁 - The business of a philosopher was to declaim in praise of poverty, with two millions sterling out at usury, to meditate epigrammatic conceits about the evils of luxury, in gardens which moved the envy of sovereigns, to rant about liberty, while fawning on the insolent and pampered...
第 393 頁 - Two words form the key of the Baconian doctrine, Utility and Progress. The ancient philosophy disdained to be useful, and was content to be stationary. It dealt largely in theories of moral perfection, which were so sublime that they never could be more than theories ; in attempts to solve insoluble enigmas j in exhortations to the attainment of unattainable frames of mind.
第 362 頁 - ... and thereto a sack of chaff to rest his head upon, he thought himself to be as well lodged as the lord of the lown, so well were they contented. Pillows, said they, were thought meet only for women in child-bed.
第 27 頁 - In 1826, a steam-loom weaver, about 15 years of age, attending to two looms, could weave twelve similar pieces in a week; some could weave fifteen pieces. In 1833, a steam-loom weaver, from...