Discoveries and inventions of the nineteenth century (1905)
Routledge, Robert · London : G. Routledge and Sons · leaf 806
Fig. 342.—Impression of Leaf found inCoal Measures {Pecopteris). 754 MINERAL COMBUSTIBLES. … Fig. 343.—Possible Aspect of the Forests of the Coal Age. immense abundance of these little spores in the coal is a proof that theyaccumulated in the ancient forests as the mosses grew, and therefore thematter of coal was not accumulated under water or washed down into thesea; for these little…
Inventions
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