1. Evans, A. G., Nature, 158, 586 (1946). Cf. Evans, A. G., ibid., 157, 438 (1946). Hughes and Ingold, ibid., 158, 94 (1946).
2. Hughes, Trans. Farad. Soc., 37, 623 (1941).
3. Evans, A. G., Trans. Farad. Soc., in the press. "The Reactions of Organic Halides in Solution" (Manchester University Press, 1946).