c acid
during the proceeding, he would reach a point at which most of the
metals would be viscous, if not actually molten, and on being freed
from the pressure of the crust they would expand, and reach the surface
in a stream. This experiment he performed near the hot geysers in
Yellowstone Park, and what was his delight, on reaching a depth
scarcely half a mile beyond his usual stopping-place, to be rewarded by
a stream of metal that heralded its approach by a loud explosion and a
great rush of superheated steam! It ran for a month, completely
filling the bed of a small, dried-up river, and when it did stop there
were ten million tons in sight. This proved the feasibility of the
scheme, and, though many subsequent attempts were less successful, we
have learned by experience where it is best to drill, and can now
obtain almost any metal we wish.

"'Magnetic eyes' are of great use to miners and Civil engineers. These
instruments are something like the mariner's compass, with the
sensitiveness enormously increased by galvanic currents. The 'eye,' as
it were, sees what substances are underground, and at what distances.
It also shows how many people are in an adjoining room--through the
magnetic properties of the iron in their blood--whether they are
moving, and in what directions and at what speed they go. In
connection with the phonograph and concealed by draperies, it is useful
to detectives, who, through a registering attachment, can obtain a
record of everything said and done.

"Our political system remains with but little change. Each State has
still two United States Senators, though the population represented by
each representative has been greatly increased, so that the Senate has
grown numerically much more than the House. It is the duty of each
member of Congress to understand the conditions existing in every other
member's State or district, and the country's interest always precedes
that of party. We have a comprehensive examination system in the civil
service, and every officeholder, except members of the Cabinet, retains
his office while efficiently performing his duty, without regard to
politics. The President can also be re-elected any number of times.
The Cabinet members, as formerly, usually remain in office while he
does, and appear regularly in Congress to defend their measures.

"The really rapid transit lines in New York are underground, and have
six tracks, two being used for freight. A