Note 2 — Chapter III · COAL, THE MOST IMPORTANT OF PLANT REMAINS

The student would do well to read up the general geology of this very interesting subject. Such books as Lyell’s Principles of Geology, Geikie’s textbooks, and many others, provide information about the process of “mountain building” on which the form of our coalfields depends. A good elementary account is to be found in Watt’s Geology for Beginners, p. 96 et seq.