On this slippery ground the impartial historian must nevertheless
venture; and he may not refuse to relate the progress accomplished,
which is considerable. Therefore, after having described the
experiments carried out for nearly ten years by Marconi himself, first
across the Bristol Channel, then at Spezzia, between the coast and the
ironclad _San Bartolommeo_, and finally by means of gigantic apparatus
between America and England, he must give the names of those who, in
the different civilised countries, have contributed to the improvement
of the system of communication by waves; while he must describe what
precious services this system has already rendered to the art of war,
and happily also to peaceful navigation.
From the point of view of the theory of the phenomena, very remarkable
results have been obtained by various physicists, among whom should be
particularly mentioned M. Tissot, whose brilliant studies have thrown
a bright light on different interesting points, such as the role of
the antennae. It would be equally impossible to pass over in silence
other recent attempts in a slightly different groove.
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