Watson Describes a Talk by Rosalind Franklin

BY mid-November, when Rosy's talk on DNA rolled about, I had learned enough crystallographic argument to follow much of her lecture.. Most important, I knew what to focus attention upon. Six weeks of listening to Francis had made me realize that the crux of the matter was whether Rosy's new X-ray pictures would lend any sup-port for a helical DNA structure. The really relevant experimental details were those which might provide clues in constructing molecular models. It took, however, only a ...