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Updated: September 5, 2025
True enough, medical science had hardly more than begun when "Science and Health" was first written to redefine fevers in terms of germ infection and the consequent disorganization of the balance of physical functionings, and the oxidation of waste materials real as fire on a hearth, but that is no reason why such ignorance should be continued from generation to generation.
It has projections that cause the powdered ore to be lifted above the flame, and, at a certain height, to fall through the flame and so be rapidly raised to the temperature required to effect the oxidation of the oxidisable minerals which it is desired to extract.
But very many human beings, these days, never saw a naked flame unless in a science class at school, where it might be shown as a spectacularly rapid reaction of oxidation. But people used electricity for heat and light and power. Mankind had moved out of the age of fire.
Moreover, at the boiling temperature, the ferric sulphate produced by the oxidation hydrolyzes in part with the formation of a basic ferric sulphate, which also tends to separate from solution. The nitric oxide is driven out by heat, and the solution then shows by its color the presence of ferric compounds.
Unless in this way the shavings become charged with the vinegar-holding bacteria the alcohol will not undergo oxidation during its passage over them, and after the bacteria thus introduced have grown enough to coat the shavings thoroughly the acetic-acid production is much more rapid than at first.
The manner in which the solid trachyte is changed on the borders of these orifices is curious: first, the base becomes earthy, with red freckles evidently due to the oxidation of particles of iron; then it becomes soft; and lastly, even the crystals of glassy feldspar yield to the dissolving agent.
Modify your chemistry a little, add or subtract an atom or two, more or less, of this or that gas, and dead matter thrills into life, or living matter sinks to the inert. In other words, life is the gift of chemistry, its particular essence is of the chemical order a bold inference from the fact that there is no life without chemical reactions, no life without oxidation.
Again and again the surface of the black basalt was reddened by oxidation and decayed to soil, and forests had time to grow upon it before the succeeding inundation sealed the sediments and soils away beneath a sheet of stone. Near the edges of the lava plain, rivers from the surrounding mountains spread sheets of sand and gravel on the surface of one flow after another.
It was no rush of air, sending life tingling in the blood made brilliant with carmine of oxidation, but the dense, mephitic sough of the thick wool of water. He descended and sat upon the floor to think. Feasible methods had failed, and the sands of his life were running out like the old physician's. Now to try the impracticable.
How much light would immediately be thrown on such questions if it were recognized that the oxidation of organic matter in our rivers is determined solely by the agency of life, is strictly limited to those conditions within which life is possible, and is most active in those circumstances in which life is most vigorous.
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