The Natural History of Coal (Classic Reprint) - Softcover

Inhaltsangabe

Excerpt from The Natural History of Coal

In the past it would seem that the root of Our difficulties in regard to agreement on such points has been the initial hypothesis, that all coals, or at least all the coals of the Carboniferous period, were derived from the same type of mother substance, accumulated under the same conditions, and converted by the same means. It is quite clear that such an assumption is entirely false. There was no one original mother substance, no one original mode of accumulation, and, if all the substances popularly termed coals, whatever their geological age may be, are taken into considera tion, no one mode of conversion. Modern research, as we shall see in the chapters which follow, has shown that each case, each seam of coal, must be examined, studied, and judged entirely on its own merits. When this fact has become more widely recognised, it would seem likely that our knowledge of the natural history of coal will progress more rapidly than in the past.

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