A Journey in Other Worlds
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plague far and wide. The unfortunate rabbits were greatly
commiserated even by the medicos that wielded the death-dealing
syringe; but, fortunately for themselves, they died easily. The
reptiles, perhaps on account of the wider distribution of the
nerve centres, had more lingering but not painful deaths, often,
while in articulo mortis, leaving the holes with which they
seemed to connect their discomfort, and making a final struggle
along the ground, only to die more quickly as a result of their
exertions. We have applied this also to the potato-bug, locust,
and other insect pests, no victim being too small for the
ubiquitous, subtle germ, which, properly cultivated and utilized,
has become one of man's best friends.
"We have microbe tests that show us as unmistakably whether the
germs of any particular disease--like malaria, typhoid, or
scarlet fever--are present in the air, as litmus-paper shows
alkalinity of a solution. We also inoculate as a preventive
against these and almost all other germ diseases, with the same
success that we vaccinate for smallpox.
"The medicinal properties of all articles of food are so well
understood also, that most cures are brought about simply by
dieting. This, reminds me of the mistakes perpetrated on a
friend of mine who called in Dr. Grave-Powders, one of the
old-school physicians, to be treated for insomnia and dyspepsia.
This old numskull restricted his diet, gave him huge doses of
Medicine, and decided most learnedly that he was daily growing
worse. Concluding that he had but a short time to live, my
friend threw away the nauseating Medicines, ate whatever he had a
natural desire for, and was soon as well as ever--the obvious
moral of which is, that we can get whatever treatment we need
most beneficially from our food. Our physicians are most serious
and thoughtful men. They never claim to be infallible, but study
scientifically to increase their knowledge and improve the
methods of treatment. As a result of this, fresh air, regular
exercise for both sexes, with better conditions, and the
preservation of the lives of children that formerly died by
thousands from preventable causes, the physique, especially of
women, is wonderfully improved, and the average longevity is
already over sixty.
"Our social structure, to be brief, is based on science, or the
conservation of energy, as the Greek philosophers predicted. It
was known to them that a certain amount of power would produce
only a certain amount of work--that is, the weight of a clock in
descending or a spring in uncoiling returns theoretically the
amount of work expended in raising or coiling it, and in no
possible way can it do more. In practice, on account of
friction, etc., we know it does less. This law, being
invariable, of course limits us, as it did Archimedes and
Pythagoras; we have simply utilized sources of power that their
clumsy workmen allowed to escape. Of the four principal
sources--food, fuel, wind, and tide--including harnessed
waterfalls, the last two do by far the most work. Much of the
electrical energy in every thunderstorm is also captured and
condensed in our capacious storage batteries, as natural hygeia
in the form of rain was and is still caught in our country
cisterns. Every exposed place is crowned by a cluster of huge
windmills that lift water to some pond or reservoir placed as
high as possible. Every stiff breeze, therefore, raises millions
of tons of water which operate hydraulic turbines as required.
Incidentally these storage reservoirs, by increasing the surface
exposed to evaporation and the consequent rainfall, have a very
beneficial effect on the dry regions in the interior of the
continent, and in some cases have almost superseded irrigation.
The windmill and dynamo thus utilize bleak mountain-tops that,
till their discovery, seemed to be but indifferent successes in
Dame Nature's domain. The electricity generated by these, in
connection with that obtained by waterfalls, tidal dynamos,
thunderstorms, chemical action, and slow-moving
quadruple-expansion steam engines, provides the power required to
run our electric ships and water-spiders, railways, and
stationary and portable motors, for heating the cables laid along
the bottom of our canals to prevent their freezing in winter, and
for almost every conceivable purpose. Sometimes a man has a
windmill on his roof for light and heat; then, the harder the
wintry blasts may blow the brighter and warmer becomes the house,
the current passing through a storage battery to make it more
steady. The operation of our ordinary electric railways is very
simple: the current is taken from an overhead, side, or
underneath wire, directly through the air, without the
intervention of a trolley, and the fast cars, for they are no
longer run in trains, make five miles a minute. The entire
weight of each car being used for its own traction, it can ascend
very steep grades, and can attain high speed or stop very
quickly.
"Another form is the magnetic railway, on which the cars are
wedge-shaped at both ends, and moved by huge magnets weighing
four thousand tons each, placed fifty miles apart. On passing a
magnet, the nature of the electricity charging a car is
automatic
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