Publisher's Synopsis
Excerpt from A Discourse on the Moral Influence of Sounds: Delivered Before the Chester County Cabinet of Natural Science, January 18th, 1839
It is not within my present purpose, to bestow upon the properties of sound, any inquiry in the least degree aiming at scientific elucidation. 'when I re peat its general definition, taught in our earliest schools, that it is the' concussion of elastic bodies, whose tremulous motion excites a wave in the sur rounding air, and that it -is the effect produced on the car by such undulation, I have given it a mean ing, proper perhaps to the introduction of the sub ject, and sufficient for my present intention. When I repeat, in the language of the poet.
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