Democratic Sentinel, Volume 1, Number 29, Rensselaer, Jasper County, 31 August 1877 — A Cheap Telephone. [ARTICLE]

A Cheap Telephone.

The simplest form of telephone is constructed of a stout piece of twine passing over at each end the top of a fruit jar with parchment drawn tightly over. The twine may be as long as can he held taut. The experiment works well, and two persons can sit in the center of a room in the second story of (heir respective homes and converse with ease. Vocal and instrumental music are also heard with good effect,