Address by the Rt. Hon. Lord Rayleigh. In: Report of the fifty-fourth meeting of the British Association for the Advancement of Science; held at Montreal in August and September 1884. London: John Murray: 3-23. In his presidential address to the British Association for the Advancement of Science, Lord Rayleigh, a British physicist, observed that “the work that deserves most credit is that in which not only are new facts presented, but their relation to old ones is pointed out”.