A Journey in Other Worlds [21]
are not interfered with
by any high-tension electric-light or power wires, thunderstorms,
or anything else.
"Rain-making is another subject removed from the uncertainties,
and has become an absolute science. We produce clouds by
explosions in the atmosphere's heights and by surface air forced
by blowers through large pipes up the side of a mountain or
natural elevation and there discharged through an opening in the
top of a tower built on the highest part. The aeriduct is
incased in a poor heat-conductor, so that the air retains its
warmth until discharged, when it is cooled by expansion and the
surrounding cold air. Condensation takes place and soon serves
to start a rain.
"Yet, until the earth's axis is straightened, we must be more or
less dependent on the eccentricities of the weather, with
extremes of heat and cold, droughts and floods, which last are of
course largely the result of several months' moisture held on the
ground in the form of snow, the congestion being relieved
suddenly by the warm spring rains.
"Medicine and surgery have kept pace with other
improvements--inoculation and antiseptics, as already seen,
rendering most of the germ diseases and formerly dreaded
epidemics impotent; while through the potency of electrical
affinity we form wholesome food-products rapidly, instead of
having to wait for their production by Nature's slow processes.
"The metric system, now universal, superseded the old-fashioned
arbitrary standards, so prolific of mistakes and confusion, about
a century ago.
"English, as we have seen, is already the language of 600,000,000
people, and the number is constantly increasing through its
adoption by the numerous races of India, where, even before the
close of the last century, it was about as important as Latin
during the greatness of Rome, and by the fact that the Spanish
and Portuguese elements in Mexico and Central and South America
show a constant tendency to die out, much as the population of
Spain fell from 30,000,000 to 17,000,000 during the nineteenth
century. As this goes on, in the Western hemisphere, the places
left vacant are gradually filled by the more progressive
Anglo-Saxons, so that it looks as if the study of ethnology in
the future would be very simple.
"The people with cultivation and leisure, whose number is
increasing relatively to the population at each generation, spend
much more of their year in the country than formerly, where they
have large and well-cultivated country seats, parts of which are
also preserved for game. This growing custom on the part of
society, in addition to being of great advantage to the
out-of-town districts, has done much to save the forests and
preserve some forms of game that would otherwise, like the
buffalo, have become extinct.
"In astronomy we have also made tremendous strides. The
old-fashioned double-convex lens used in telescopes became so
heavy as its size grew, that it bent perceptibly from its own
weight, when pointed at the zenith, distorting the vision; while
when it was used upon a star near the horizon, though the glass
on edge kept its shape, there was too much atmosphere between it
and the observed object for successful study. Our recent
telescopes have, therefore, concave plate-glass mirrors, twenty
metres in diameter, like those used for converging the sun's rays
in solar engines, but with curves more mathematically exact,
which collect an immense amount of light and focus it on a
sensitive plate or on the eye of the observer, whose back is
turned to the object he is studying. An electrical field also
plays an important part, the electricity being as great an aid to
light as in the telephone it is to sound. With these placed
generally on high mountain peaks, beyond the reach of clouds, we
have enormously increased the number of visible stars, though
there are still probably boundless regions that we cannot see.
These telescopes have several hundred times the power of the
largest lenses of the nineteenth century,
by any high-tension electric-light or power wires, thunderstorms,
or anything else.
"Rain-making is another subject removed from the uncertainties,
and has become an absolute science. We produce clouds by
explosions in the atmosphere's heights and by surface air forced
by blowers through large pipes up the side of a mountain or
natural elevation and there discharged through an opening in the
top of a tower built on the highest part. The aeriduct is
incased in a poor heat-conductor, so that the air retains its
warmth until discharged, when it is cooled by expansion and the
surrounding cold air. Condensation takes place and soon serves
to start a rain.
"Yet, until the earth's axis is straightened, we must be more or
less dependent on the eccentricities of the weather, with
extremes of heat and cold, droughts and floods, which last are of
course largely the result of several months' moisture held on the
ground in the form of snow, the congestion being relieved
suddenly by the warm spring rains.
"Medicine and surgery have kept pace with other
improvements--inoculation and antiseptics, as already seen,
rendering most of the germ diseases and formerly dreaded
epidemics impotent; while through the potency of electrical
affinity we form wholesome food-products rapidly, instead of
having to wait for their production by Nature's slow processes.
"The metric system, now universal, superseded the old-fashioned
arbitrary standards, so prolific of mistakes and confusion, about
a century ago.
"English, as we have seen, is already the language of 600,000,000
people, and the number is constantly increasing through its
adoption by the numerous races of India, where, even before the
close of the last century, it was about as important as Latin
during the greatness of Rome, and by the fact that the Spanish
and Portuguese elements in Mexico and Central and South America
show a constant tendency to die out, much as the population of
Spain fell from 30,000,000 to 17,000,000 during the nineteenth
century. As this goes on, in the Western hemisphere, the places
left vacant are gradually filled by the more progressive
Anglo-Saxons, so that it looks as if the study of ethnology in
the future would be very simple.
"The people with cultivation and leisure, whose number is
increasing relatively to the population at each generation, spend
much more of their year in the country than formerly, where they
have large and well-cultivated country seats, parts of which are
also preserved for game. This growing custom on the part of
society, in addition to being of great advantage to the
out-of-town districts, has done much to save the forests and
preserve some forms of game that would otherwise, like the
buffalo, have become extinct.
"In astronomy we have also made tremendous strides. The
old-fashioned double-convex lens used in telescopes became so
heavy as its size grew, that it bent perceptibly from its own
weight, when pointed at the zenith, distorting the vision; while
when it was used upon a star near the horizon, though the glass
on edge kept its shape, there was too much atmosphere between it
and the observed object for successful study. Our recent
telescopes have, therefore, concave plate-glass mirrors, twenty
metres in diameter, like those used for converging the sun's rays
in solar engines, but with curves more mathematically exact,
which collect an immense amount of light and focus it on a
sensitive plate or on the eye of the observer, whose back is
turned to the object he is studying. An electrical field also
plays an important part, the electricity being as great an aid to
light as in the telephone it is to sound. With these placed
generally on high mountain peaks, beyond the reach of clouds, we
have enormously increased the number of visible stars, though
there are still probably boundless regions that we cannot see.
These telescopes have several hundred times the power of the
largest lenses of the nineteenth century,