Lord Rayleigh was justifiably renowned for the breadth, clarity and quality of his work, which has had a continuing impact on many fields of modern science. These six chronologically-arranged volumes collect the scientific papers written during his long and distinguished career from 1869 to 1919. His 446 publications embrace 12 disciplines (as classified by Rayleigh): mathematics, general mechanics, elastic solids, capillarity, hydrodynamics, sound,...