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Updated: May 16, 2025
The choice of a solution must depend upon the nature of the work in hand. A !normal acid solution! should contain in one liter that quantity of the reagent which represents 1 gram of hydrogen replaceable by a base. A !normal alkali solution! should contain sufficient alkali in a liter to replace 1 gram of hydrogen in an acid.
The more advanced technically have stripped their environments of replaceable and irreplaceable resources. They have also perfected techniques for using the productive power of their fellow creatures. One way to do this is by owning the body. Another way is ownership of land, capital and consumer goods which enable the owner to live without labor on the products resulting from the labor of others.
Artistes are not replaceable in a few hours; those that are in existence must perforce be spared, or the citizens who govern us now would not know where to spend their evenings."
Now the shallow, inattentive reader may not grasp all that is implied in the remark that a specialist, unconscious of his own peculiar and circumscribed greatness, and cheaply replaceable in case of extinction, was exercising a seasoned colt, thoroughly spoiled beforehand.
Were Paris entered, whether immediately or after that approaching envelopment of the armies, it would be for destruction; and all that is not replaceable in man's work would be lost to our children at the hands of men who cannot make.
Replaceable natural resources such as soil fertility, grasses and trees can be restored and reproduced. Irreplaceable natural resources are exhausted by one use. In so far as they are concerned, that part of the earth's crust has been impoverished made poorer.
Wasted through neglect and careless use, squandered in the senseless destruction of war, the earth is still a rich treasure house for its multitudinous forms of life. Its remaining treasures can be carefully conserved. Such replaceable resources as topsoil, vegetation and water can be husbanded.
Untouched by human hands, on the prairies and in the forests, topsoil is deepened year by year as winter frosts break up soft rocks, as dead grasses, leaves, twigs break down into humus, to become part of the topsoil and provide the nourishment for a new round of vegetation. Topsoil is renewable, replaceable. Lost through cropping and erosion, it may be rebuilt and deepened by natural processes.
Complexions, too, were replaceable, spectacles superseded an inefficient eye-lens, and imperceptible false diaphragms were thrust into the failing ear. So he went over our anatomies, until, at last, he had conjured up a weird thing of shreds and patches, a simulacrum, an artificial body of a man, with but a doubtful germ of living flesh lurking somewhere in his recesses.
It should be noted that the acid oxalate and the acid tartrate each contain one hydrogen atom replaceable by a base, while the tetroxalate contains three such atoms and the oxalic acid two. Soda ash is crude sodium carbonate.
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