They are well known, beginning with pioneers like Wilson
and Gardner in England, Roberts in Australia, Wirth and Lirpa in
Germany, Gabet in France, and Tesla, Edison, Sims, and the younger
Hammond in our own country.
"The one thing, you may not know, that has kept us back while
wireless telegraphy has gone ahead so fast is that in wireless we
have been able to discard coherers and relays and use detectors
and microphones in their places. But in telautomatics we have to
keep the coherer. That has been the barrier. The coherer until
recently has been spasmodic, until we had Hammond's mercury steel-
disc coherer and now my own. Why," he cried, "we are just on the
threshold, now, of this great science which Tesla has named
telautomatics--the electric arm that we can stretch out through
space to do our work and fight our battles."
It was not difficult to feel the enthusiasm of the captain over an
invention of such momentous possibilities, especially as the Z99
was well out in the harbour now and we could see her flashing her
red and green signal-lights back to us.
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