Elements of Geology; a Text-Book for Colleges And for the General Reader
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In our eReader you can find the full English version of the book. Read Elements of Geology; a Text-Book for Colleges And for the General Reader Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Elements of Geology; a Text-Book for Colleges And for the General Reader
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MetamorpMc Coal. — It is probable that bituminous coal is the nor- * The composition of vmod — timber — is usually given as about CiiHisOb. I have taken the formula of cellulose instead, viz., CeHioOs ; or, taliing six equivalents for con- venience of calculation, CaoHooOao. I believe this to be much nearer the composition of vegetable matter of the Coal period than is the formula of hard wood like oak or beech.
All the results may be worked out, however, with equal ease by the use of either fo...rmula for vegetable matter.
ORIGIN OP COAL AND ITS VARIETIES. 357 7nal coal formed by the above process, and that the extrenre forms, an- thracite and graphite, are the result of an after-change produced by heat. But some geologists go further : they believe that anthracite has been changed by intense heat sufficient to vaporize the volatile matters, which then condense in fissures above, as bitumen, petroleum, elc. ; that, as in art, when bituminous coal is subjected to heat out of contact with air, the fixed carbon is left as coke, the tarry and liquid matters are condensed in purifiers, and the permanent gases collected in gasom- eters ; so in Xature, when beds of bituminous coal are subjected to in- tense heat in the interior of the earth, the fixed carbon is left as antJini- cife, the tarry and liquid matters collected in fissures, as bitumen and petroleum, while the gases escape in burning springs.
What to read after Elements of Geology; a Text-Book for Colleges And for the General Reader?
You can find similar books in the "Read Also" column, or choose other free books by Leconte, Joseph, 1823-1901 to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
MetamorpMc Coal. — It is probable that bituminous coal is the nor- * The composition of vmod — timber — is usually given as about CiiHisOb. I have taken the formula of cellulose instead, viz., CeHioOs ; or, taliing six equivalents for con- venience of calculation, CaoHooOao. I believe this to be much nearer the composition of vegetable matter of the Coal period than is the formula of hard wood like oak or beech.
All the results may be worked out, however, with equal ease by the use of either fo...rmula for vegetable matter.
ORIGIN OP COAL AND ITS VARIETIES. 357 7nal coal formed by the above process, and that the extrenre forms, an- thracite and graphite, are the result of an after-change produced by heat. But some geologists go further : they believe that anthracite has been changed by intense heat sufficient to vaporize the volatile matters, which then condense in fissures above, as bitumen, petroleum, elc. ; that, as in art, when bituminous coal is subjected to heat out of contact with air, the fixed carbon is left as coke, the tarry and liquid matters are condensed in purifiers, and the permanent gases collected in gasom- eters ; so in Xature, when beds of bituminous coal are subjected to in- tense heat in the interior of the earth, the fixed carbon is left as antJini- cife, the tarry and liquid matters collected in fissures, as bitumen and petroleum, while the gases escape in burning springs.
What to read after Elements of Geology; a Text-Book for Colleges And for the General Reader?
You can find similar books in the "Read Also" column, or choose other free books by Leconte, Joseph, 1823-1901 to read onlineMoreLess
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