This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1878 Excerpt: ...With the increase in the carbon, both the total volume of the occluded gas and the relative proportion of the marsh-gas become larger; this is especially the case in the hard compact steam coals. Anthracites yield by far the largest volume of gas, and this consists almost entirely of marshgas; 1 lb. of some anthracites ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1878 Excerpt: ...With the increase in the carbon, both the total volume of the occluded gas and the relative proportion of the marsh-gas become larger; this is especially the case in the hard compact steam coals. Anthracites yield by far the largest volume of gas, and this consists almost entirely of marshgas; 1 lb. of some anthracites will give off nearly a couple of gallons of gas. The enormous quantity of gas retained by anthracites is dne to their compactness and dense structure, which again arises from the great pressure to which they have been exposed. On the other hand the steam coals, and especially the bituminous coals, are less coherent and more porous, and the gases much more easily make their escape. Enormous volumes of gas rush out from the working face of some of the deep steam-coals whilst comparatively little escapes from that of anthracites. The gases occluded in cannel are distinguished from those met with in the other coals by the presence of the hydrocarbon Ethane, which differs from marsh-gas in containing more carbon and hydrogen, its chemical formula being C2H6. It burns with a bright luminous flame, and doubtless contributes to the illuminating power of the gas obtained by heating cannel on a large scale. Jet, wbich is a species of cannel, affording a large quantity of illuminating gas when heated, contains a still larger proportion of occluded hydrocarbons of even higher molecular weight than ethane. The gas in brown coal and lignite consists almost entirely of carbonic acid mixed with a small quantity of carbonic oxide and nitrogen. The presence of the carbonic oxide is especially remarkable, as it has not been detected in any other carboniferous exhalation. Some of the results of Mr. Thomas's analyses are seen in the following table: Fire-damp con...
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Add this copy of Coal-Its History and Uses to cart. $55.34, new condition, Sold by Revaluation Books rated 4.0 out of 5 stars, ships from Exeter, DEVON, UNITED KINGDOM, published 2016 by Macnutt Press.
Add this copy of Coal: Its History And Uses to cart. $59.08, new condition, Sold by Booksplease rated 4.0 out of 5 stars, ships from Southport, MERSEYSIDE, UNITED KINGDOM, published 2010 by Kessinger Publishing.
Add this copy of Coal: Its History And Uses to cart. $59.23, new condition, Sold by Booksplease rated 4.0 out of 5 stars, ships from Southport, MERSEYSIDE, UNITED KINGDOM, published 2007 by Kessinger Publishing.
Add this copy of Coal: Its History And Uses to cart. $77.89, new condition, Sold by Booksplease rated 4.0 out of 5 stars, ships from Southport, MERSEYSIDE, UNITED KINGDOM, published 2007 by Kessinger Publishing.
