9
CONTENTS.
- Chapter I. Introductory and Historical 17
- Fuels and their distribution 17
- Early notices of Texas brown coals 18
- Early experiments in burning 21
- Early experiments in coking and briquetting 22
- Acknowlegements 24
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Chapter II. Brown Coal.—Its Origin, Formation,
Physical and Chemical Character 25
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Classification of coal 25
- Coal of Coal Measures 25
- Coal of Cretaceous 25
- Coal of Tertiary 25
- Brown Coal and Lignite 26
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Origin 26
- Character of vegetation 27
- Character due to maceration 30
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Formation 31
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Decomposition of vegetable matter 31
- In contact with air 31
- Out of contact with air 31
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The deposition of the decomposed materials 34
- At the place of origin 34
- At other localities 40
- The subsequent alteration of the deposits by slow or more rapid metamorphism 43
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Decomposition of vegetable matter 31
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Physical character of brown coal 43
- Specific gravity 43
- Hardness 43
- Coherence 44
- Cleavage 44
- Jointed structure 44
- Fracture 44
- Color 44
- Lustre 44
- Streak and powder 44
- Contents of coal in hygroscopic water 44
- Ashes of brown coal 45
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Chemical properties of brown coal 46
- Composition 46
- Action of reagents 47
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Classification of Texas brown coals 48
- Lignite 49
- Earthy brown coal 49
- Brown coal 50
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Classification of coal 25









