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pg a009a: Report on the brown coal and lignite of Texas. Character, formation, occurrence, and fuel uses. Publication 13372632.

 
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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
  • Chapter II. Brown Coal.—Its Origin, Formation, Physical and Chemical Character 25
    • Classification of coal 25
      • Coal of Coal Measures 25
      • Coal of Cretaceous 25
      • Coal of Tertiary 25
    • Brown Coal and Lignite 26
    • Origin 26
      • Character of vegetation 27
      • Character due to maceration 30
    • Formation 31
      • Decomposition of vegetable matter 31
        • In contact with air 31
        • Out of contact with air 31
      • 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
    • 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
    • Chemical properties of brown coal 46
      • Composition 46
      • Action of reagents 47
    • Classification of Texas brown coals 48
      • Lignite 49
      • Earthy brown coal 49
      • Brown coal 50

       

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