Published online by Cambridge University Press: 02 January 2015
1 J. C. Belshé, Advances in Physics, 6, pp. 192-3 (1957).
2 M. J. Aitken, Archaeometry, 2, p. 40 (1959).
3 M. J. Aitken, G. Webster, A. Rees, ANTIQUITY, 1958, pp. 270-1.
4 M. J. Aitken, Archaeometry, 1, pp. 24-6 (1958).
5 E. T. Artis, The Durobrivae of Antoninus (1828).
6 I am indebted to Mr Hartley for permission to quote this conclusion.
7 P. J. Fowler, Oxoniensia, XXIV (1959) (forthcoming).
8 In co-operation with the Royal Commission on Historical Monuments.