ght rows on opposite sides of broad aisles
that were bordered with single ranks of trees. The summit of each cavern
sloped sharply both ways. Several horizontal rows of great square holes,
obstructed by a thin, shiny, transparent substance, pierced the frontage
of each cavern. Inside were caverns within caverns; and one might ascend
and visit these minor compartments by means of curious winding ways
consisting of continuous regular terraces raised one above another.
There were many huge, shapeless objects in each compartment which were
considered to have been living creatures at one time, though now the thin
brown skin was shrunken and loose, and rattled when disturbed. Spiders
were here in great number, and their cobwebs, stretched in all directions
and wreathing the great skinny dead together, were a pleasant spectacle,
since they inspired with life and wholesome cheer a scene which would
otherwise have brought to the mind only a sense of forsakenness and
desolation. Information was sought of these spiders, but in vain. They
were of a different nationality from those with the expedition, and their
language seemed but a musical, meaningless jargon. They were a timid,
gentle race, but ignorant, and heathenish worshipers of unknown gods.
The expedition detailed a great detachment of missionaries to teach them
the true religion, and in a week's time a precious work had been wrought
among those darkened creatures, not three families being by that time at
peace with each other or having a settled belief in any system of
religion whatever. This encouraged the expedition to establish a colony
of missionaries there permanently, that the work of grace might go on.

But let us not outrun our narrative. After close examination of the
fronts of the caverns, and much thinking and exchanging of theories, the
scientists determined the nature of these singular formations. They said
that each belonged mainly to the Old Red Sandstone period; that the
cavern fronts rose in innumerable and wonderfully regular strata high in
the air, each stratum about five frog-spans thick, and that in the
present discovery lay an overpowering refutation of all received geology;
for between every two layers of Old Red Sandstone reposed a thin layer of
decomposed limestone; so instead of there having been but one Old Red
Sandstone period there had certainly been not less than a hundred and
seventy-five! And by the same token it was plain that ther