Discoveries and inventions of the nineteenth century (1905)
Routledge, Robert · London : G. Routledge and Sons · leaf 804
ts than a lump of coal. Then everybody knows that coal is foundthousands of feet beneath the surface of the earth, whereas plants cangrow only in the light of the sun. One begins to understand the matteronly when the teachings of geology have shown him that, so far from thecrust of the earth being,… … Fig. 341.—Fossil Trees in a Railway Cutting. tract of land is emerging from the ocean, there a continent is subsidingbeneath the water. The extreme slowness with which these changes pro-ceed causes them to escape all ordinary observation. The case may becompared to the hour-hand on the dial, which…
Inventions
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