Part,  Chapter

1 1,1|  had risen into the higher layers of the atmosphere, to a
2 1,1| transit of the atmospheric layers was diminished by half.
3 1,1|   between the subterranean layers and the crater, its depth
4 1,5|  coal, placed in alternate layers, are transformed and reduced,
5 1,5|    heaps and in successive layers, as the charcoal-burner
6 1,7| coal and sulphur. Then new layers of bruised pyrites were