remarkable degree
in their arts and sciences, especially geometry and astronomy. Their
cities are equipped with vast palaces of music, where not infrequently
as many as twenty-five thousand lusty voices of this giant race swell
forth in mighty choruses of the most sublime symphonies.

The children are not supposed to attend institutions of learning before
they are twenty years old. Then their school life begins and continues
for thirty years, ten of which are uniformly devoted by both sexes to
the study of music.

Their principal vocations are architecture, agriculture, horticulture,
the raising of vast herds of cattle, and the building of conveyances
peculiar to that country, for travel on land and water. By some device
which I cannot explain, they hold communion with one another between the
most distant parts of their country, on air currents.

All buildings are erected with special regard to strength, durability,
beauty and symmetry, and with a style of architecture vastly more
attractive to the eye than any I have ever observed elsewhere.

About three-fourths of the "inner" surface of the earth is land and
about one-fourth water. There are numerous rivers of tremendous size,
some flowing in a northerly direction and others southerly. Some of
these rivers are thirty miles in width, and it is out of these vast
waterways, at the extreme northern and southern parts of the "inside"
surface of the earth, in regions where low temperatures are experienced,
that fresh-water icebergs are formed. They are then pushed out to sea
like huge tongues of ice, by the abnormal freshets of turbulent waters
that, twice every year, sweep everything before them.

We saw innumerable specimens of bird-life no larger than those
encountered in the forests of Europe or America. It is well known that
during the last few years whole species of birds have quit the earth. A
writer in a recent article on this subject says:(19)

(19 "Almost every year sees the final extinction of one or more bird
species. Out of fourteen varieties of birds found a century since on a
single island--the West Indian island of St. Thomas--eight have now to
be numbered among the missing.")

Is it not possible that these disappearing bird species quit their
habitation without, and find an asylum in the "within world"?

Whether inland among the mountains, or along the seashore, we found
bird life prolific. When they spread their great wings some of the
birds appea