Letter from Anthony Philip French, on a paper 'Experiments on the reaction T(d, n)He4' by D L Allen and M J Poole, to D C Martin, Assistant Secretary of the Royal Society Paper reference code: A100 French corrects an error he made in his initial criticism of the paper [see RR/73/132]. Written at the Cavendish Laboratory, Free School Lane, Cambridge [England]. [Published in Proceedings A, 1951]. Endorsed on recto as received 11 July 1950. 10 July 1950