Published online by Cambridge University Press: 20 April 2017
1 The writer is grateful to Mr. William B. Field of the National Bureau of Standards in Washington for supplying some of the material used in this note.
2 The Annual Register (London, 1885, New Series), Pt. II, p. 4. In 1896 the Philharmonic Society in London adopted the “diapason normal,” and other private bodies followed suit.
3 De Martens, Nouveau Recueil Général de Traités 3rd Ser., Vol. XI (1922), p. 245.
4 For texts, see De Martens, op. cit., 3rd Ser., Vol. XI (1922), pp. 323, 691; and Vol. XII (1924), p. 423.
5 The Annual Register (London, 1939, New Series), Pt. II, p. 383.