ntry. machinery in motioh and a governor to regulate the The first.telegraph ever erected in the United States was that of Professor Morse; and, as originally em- nected with the sounder. A very slight movement is ment is required at every station; the printing apparatus ployed, its principal… … be effected by an extremely feeble current. The ordin- the armature of which forms a valve, which is hung by to be most valuable) consisted in the use of an electro- ary Morse ‘‘ alphabet” is used, consisting of dots and a stem, /, upon a slender wire forming a spring, the ten- magnet, which…
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