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Carbon, . . . . 72 Hydrogen, . . . 11 | | 99 Oxygen, . . . . 88|

Dubbadoe and her pretty daughter, when they drive in from Milton to see you, of the ice-cream you ate last night at the summer party which the Bellinghams gave the Pinckneys, of the hard-tack and boiled dog which dear John is now digesting in front of Petersburg, the real business, I say, is to supply the human frame with carbon, hydrogen, oxygen, and nitrogen in organized forms.

Well, too, is the tree repaid for all that it gives out through its leaves. The thin stimulating sap that comes from the root, which could not of itself build up the tree, thickens in giving out its moisture, and through the leaves possesses itself of carbon from the atmosphere.

Ordinarily this action of bacteria, as already noticed, produces an almost complete though slow oxidation of the carbon, and results in the total decay of the vegetable matter. But if the vegetable mass be covered by water and mud under proper conditions of moisture and temperature, a different kind of fermentation arises which does not produce such complete decay.

"Then you have already found that those three elements, calcium, carbon, and oxygen, you called them, I think you find that those elements are all lacking in this soil." "No, this test does not prove that," said Percy. "It only proves that they are not present as limestone.

In doing this, they not only preserve the necessary proportion of oxygen and carbon dioxide in the atmosphere, but also put the carbon and oxygen in such a condition that they can again unite. This supplies heat and the other forms of bodily energy. Entering as a free element, oxygen leaves the body as a part of the waste compounds which it helps to form.

The metal which had been destroyed is revivified by the grains of wheat and the action of fire. Is this not to perform the miracle of the resurrection? No objection can he raised to this interpretation, as long as we are ignorant of the phenomena of oxidation, and the reduction of oxides by means of carbon, or organic substances rich in carbon, such as sugar, flour, seeds, etc.

He braced his shoulders firmly against the brass plate under them, and moved the carbon point steadily back to its place, with its tip resting on his breast; the silk-wrapped wire that dangled between it and the magnet quivering, as he did so, as with conscious life. Drawing a long breath, he tightened the cord, and heard a faint click as the key snapped down.

There were, however, conditions under which alone that combustion could take place one being that the heat of the chamber must be 3,700 deg., and that carbon must be constantly formed. Mr.

Staite devised an incandescent lamp consisting of a fine rod or stick of carbon rendered white-hot by the current, and to preserve the carbon from burning in the atmosphere, he enclosed it in a glass bulb, from which the air was exhausted by an air pump. Edison and Swan, in 1878, and subsequently, went a step further, and substituted a filament or fine thread of carbon for the rod.