The Theory of Sound, Chapter 1 - Lord Rayleigh http://www.measure.demon.co.uk/docs/Theory.html
Internet version of Chapter 1 of The Theory of Sound by Lord Rayleigh (published in 1877). Chapter 1 is an introduction to acoustics which reveals Rayleigh's strong interest in musical acoustics and the Helmholtz resonator. One or two slight errors are apparent and there are minor inaccuracies in the table of musical note frequencies.