476

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