Chapter

1 I  |         such as the Devonian red sandstone, but without result. James
2 II |       schist, compact or friable sandstone, gravel and stones, the
3 III|        our sphere principally of sandstone, limestone, and granite,
4 III|   through the wall of schist and sandstone, some shored up with great,
5 VI |  dismally than on the rock. Only sandstone and schist were round us
6 VI |          schist and the tertiary sandstone. From this very place had
7 VII| pudding-stone, interspersed with sandstone and schist, such as is most
8 VII|      formation, were composed of sandstone and schistous rocks. But
9 XVI|      bored through the masses of sandstone and schist.~Hollow, cavernous