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EXPOSITION AT VIENNA.
is highly spoken of by the managers as well as by M. Amiot, the French inspector of telegraphs, in his report to which I have alluded.
Plate XIY. illustrates its general appearance and working.
Plate XIV.
At the terminal station A, the "receiver” consists of two coils of electro-magnets, G and D, both communicating on the one hand with the ground through the medium of a