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Updated: May 17, 2025
The second would comprehend the preservation, through burial, of the organic matter in the stage of carbonization that it had reached, and as the result of compression and gradual desiccation, the development of the physical properties that we now find in the different carbonized substances. We annex to this article a number of figures made from preparations of various coals.
If it'd been heading the other way, it could've gone out and landed in the sea. That would ha' been a mess! But where is it?" The squad ship descended farther. It followed the lane of carbonized soil. That marking narrowed the Cerberus had plainly been descending. Then the streak came to an end. It pinched out to nothing. The Cerberus should have been at its end. It wasn't.
This section shows more coal than is usual; on the whole, coal seams do not take up more than one foot in fifty of the Coal Measures. They vary also in thickness more than is seen in the section, some exceptional seams reaching the thickness of fifty feet. Coal is of vegetable origin. Examined under the microscope even anthracite, or hard coal, is seen to contain carbonized vegetal tissues.
And if, as I believe, it can be demonstrated that ordinary coal is nothing but "saccular" coal which has undergone a certain amount of that alteration which, if continued, would convert it into anthracite; then, the conclusion is obvious, that the great mass of the coal we burn is the result of the accumulation of the spores and spore-cases of plants, other parts of which have furnished the carbonized stems and the mineral charcoal, or have left their impressions on the surfaces of the layer.
This done, they set fire to the wood, the heat was communicated to the shist, which soon kindled, since it contains coal and sulphur. Then new layers of bruised pyrites were arranged so as to form an immense heap, the exterior of which was covered with earth and grass, several air-holes being left, as if it was a stack of wood which was to be carbonized to make charcoal.
He also extended his searches far into the realms of nature in the line of grasses, plants, canes, and similar products, and in these experiments at that time and later he carbonized, made into lamps, and tested no fewer than six thousand different species of vegetable growths.
The lava had burned off the bark and partly carbonized the outside part, and then the whole had subsequently taken the form of opal silica. There is a space of about four inches between the tree and the surrounding lava. "By raising the candles above our heads we could look up the body of the tree some thirty feet.
From the filaments of bamboo fiber the next step was to filaments of cellulose in the form of cotton, duly prepared and carbonized. Later came the metalized carbon filament and finally the employment of tantalum or tungsten.
The region marked c is carbonized; the organic elements of the wood-cells, tracheæ, etc., have undergone but little change in shape. Arthropitus gallica, St. This region, already filled by petrifying salts, but not completely hardened, has not been able to resist, as the region, a, an external pressure, and has become more or less misshapened.
At the City Gas Works, in Dorset-street, Black-friars, the quantity of coal daily carbonized amounted to, three chaldron, which afforded a quantity of gas adequate to the supply of 1,500 Argand lamps; so that twenty-eight chaldron of coal were daily carbonized at that time, and 76,500 lights supplied by those two companies only.
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