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They ought, perhaps, to add, where the waters acquire great swiftness, and strike with force against the rocks of the banks. Cementation seems to explain why the crusts augment so little in thickness.
"My dear father, I consider that it is to this inequality that society owes its firmest cementation, that we are enabled to live in peace and happiness, protected by just laws, each doing his duty in that state of life to which he is called, rising above or sinking in the scale of society according as he has been entrusted with the five talents or the one. Equality can and does exist nowhere.
The fact of change is seen in their hardness arid cementation, their more or less complete recrystallization, and their foliation; but the change is often so complete that no trace of their original structure and mineral composition remains to tell whether the rocks from which they were derived were sedimentary or igneous, or to what variety of either of these classes they belonged.
In spite of a rapid increase in the use of machines and the overwhelming demand for iron products for the expanding railroads, the use of steel had expanded little prior to 1855. The methods of production were still largely those of a century earlier. Slow preparation of the steel by cementation or in crucibles meant a disproportionate consumption of fuel and a resulting high cost.
"My dear father, I consider that it is to this inequality that society owes its firmest cementation that we are enabled to live in peace and happiness, protected by just laws, each doing his duty in that state of life to which he is called, rising above or sinking in the scale of society according as he has been entrusted with the five talents or the one. Equality can and does exist nowhere.
Time, however, is required for such consolidation and cementation; that time is arriving fast, and the future prospects of the Cape are as cheering, as you may think, from my narrative, they have been disheartening and gloomy." "I trust in God that such will be the case," replied Alexander.
As the general cause of consolidation among mineral bodies, formed originally of loose materials, has been found to consist in certain degrees of fusion or cementation of those materials by means of heat; and as, in the examination of the horizontal strata we actually find very different degrees of consolidation in the several strata, independent of their positions in relation to height or depth, we have reason to believe that the heat, or consolidating operation, has not been equally employed in relation to them all.
Some of them preferred cementation; others sought the universal alkahest, or dissolvent; and some of them boasted the great efficacy of the essence of emery.
The work of Réaumur and, especially, of Huntsman, whose development of cast steel after 1740 secured an international reputation for Sheffield, had established the cementation and crucible processes as the primary source of cast steel, for nearly 100 years.
Thus below the zone of solution where the work of water is to dissolve, lies the zone of cementation where its work is chemical deposit. A part of the invisible load of waste is thus transferred from rocks near the surface to those at greater depths.
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