We men, with our bicycles and road-skates,
our Lilienthal soaring-machines, our guns and sticks and so forth, are
just in the beginning of the evolution that the Martians have worked
out. They have become practically mere brains, wearing different
bodies according to their needs just as men wear suits of clothes and
take a bicycle in a hurry or an umbrella in the wet. And of their
appliances, perhaps nothing is more wonderful to a man than the
curious fact that what is the dominant feature of almost all human
devices in mechanism is absent--the _wheel_ is absent; among all the
things they brought to earth there is no trace or suggestion of their
use of wheels. One would have at least expected it in locomotion. And
in this connection it is curious to remark that even on this earth
Nature has never hit upon the wheel, or has preferred other expedients
to its development. And not only did the Martians either not know of
(which is incredible), or abstain from, the wheel, but in their
apparatus singularly little use is made of the fixed pivot or
relatively fixed pivot, with circular motions thereabout confined
to one plane. Almost all the joints of the machinery present a
complicated system of sliding parts moving over small but beautifully
curved friction bearings.
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