Familiar Letters on Chemistry in Its Relations to Physiology, Dietetics, Agriculture, Commerce and Political Economy

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Taylor, 1851 - 536 páginas
 

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Página v - We have shown the example of a nation, in which every class of society accepts with cheerfulness the lot which providence has assigned to it; while at the same time every individual of each class is constantly striving to raise himself in the social scale...
Página 53 - Is there any one so foolish," he asks, "as to believe that there are antipodes with their feet opposite to ours; people who walk with their heels upward, and their heads hanging down? That there is a part of the world in which all things are topsy-turvy: where the trees grow with their branches downward, and where it rains, hails, and snows upward? The idea of the roundness of the earth...
Página 139 - ... making it were discovered. With every improvement in the mode of manufacture, its price fell ; and its sale increased in an equal ratio. Sulphuric acid is now manufactured in leaden chambers, of such magnitude that they would contain the whole of an ordinary-sized house. As regards the process and the apparatus, this manufacture has reached its acme — scarcely is either susceptible of improvement. The leaden plates of which the chambers are constructed, requiring to be joined together with...
Página 312 - The consumption of oxygen in a given time may be expressed by the number of respirations; it is, therefore, obvious that in the same animal the quantity of nourishment required must vary with the force and number of respirations.
Página 139 - Government repealed the duty, and its price was reduced to its minimum, the cost of soda depended upon that of sulphuric acid. The demand for sulphuric acid now increased to an immense extent ; and, to supply it, capital was embarked abundantly, as it afforded an excellent remuneration. The origin and formation of sulphuric acid was studied most carefully ; and from year to year, better, simpler, and cheaper methods for making it were discovered. With eveiy improvement in the mode of manufacture,...
Página 460 - He is compelled to consume force merely in order to supply matter for respiration. Cultivation is the economy of force. Science teaches us the simplest means of obtaining the greatest effect with the smallest expenditure of power, and with given means to produce a maximum of force. The unprofitable exertion of power, the waste of force in agriculture, in other branches of industry, in science, or in social economy, is characteristic of the savage state, or of the want of knowledge.
Página 523 - What a curious and interesting subject for contemplation ! In the remains of an extinct animal world England is to find the means of increasing her wealth in agricultural produce, as she has already found the great support of her manufacturing industry in fossil fuel...
Página 452 - Wine, as a restorative, as a means of refreshment when the powers of life are exhausted, of giving animation and energy where man has to struggle with days of sorrow ; as a means of correction and compensation...
Página 141 - ... sterling. It leads to frequent improvements in the manufacture of glass, which continually becomes cheaper and more beautiful. It enables us to return to our fields all their potash— a most valuable and important manure— in the form of ashes, by substituting soda in the manufacture of glass and soap.

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