wunder · LibraryCHAPTER III.. Subterranean Heat.
Read in the Wunder reader — freeSUBTERRANEAN HEAT.
Zone of invariable Temperature—Increasing Temperature of the Earth at a greater Depth—Proofs found in Mines and Artesian Wells, in Hot Springs and Volcanic Eruptions— The whole Earth probably at one time a fluid mass 31
The Subterranean World · The Wunder Library — complete classics, free to read, with narration.
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