1. Conversion factors and tables, p. 5 (British Standard 350: Part 1: 1974).
2. Nature (GB), 163, 427 (1949). Unit of Heat (London: Royal Society, 1950).
3. Lodge, O. J., Nature (GB), 52, 30 (1895).
4. Lavoisier, A. L., Traite elementairé de la chimie (Paris, 1789). McKie, D., and Heathcote, N. H., Discovery of Specific and Latent Heat, p. 38 (London: Arnold, 1935).
5. Rep. Brit. Ass., 1896, p. 153.