omotives, on any ordinary telegraph line. ticular—it is comparatively limited in extent, and conse- and our general machinery in the leading markets of the The instrument may be said to consist ofa metallic cylin- quently it does not do us the mischief which some writers world, This was to be… … petitors they have to con- These vibrations are so rapid HAVENS NEW TELEPHONE. front competitors of first- that the lever has no time to rate ability, energy, and re- fly back and forth. Often, sources.—London (England) Colliery Guardian. the great progress which American coal mining has made by…
Internet Archive · Public domain (published before 1931). Free to use for anything.
![An illustration from The Telegrapher [microform] (1864)](https://img.insideoutlibrary.com/img/200/ia-telegrapher05nati-320-204.webp)
