the illuminating hypothesis of Crick and Watson on the double spiral structure of this substance. She established definitely that the main sugar phosphate chain of nucleic acid lay on an outside spiral and not on an inner one, as had been authoritatively suggested. In this close collaboration between the Cambridge and London schools it is difficult to disentangle all the contributions of individuals, but what Miss Franklin had to give was the technique of preparing and taking X-ray photographs of the two hydrated forms of deoxyribonucleic acid and by applying the methods of Patterson function analysis to show that the structure was best accounted for by a double spiral of nucleotides, in which the phosphorus atoms lay on the outside. (6) James Watson , The Double Helix (1968) Though her (Rosalind Franklin) features were strong, she was not unattractive and might have been quite stunning had she taken even a mild interest in clothes. This she did not. There was never lipstick to contrast with her straight black hair, while at the age of thirty-one her dresses showed all the imagination of English blue-stocking adolescents. (7) In 1968 James Watson published The Double Helix , his account of the discovery of the structure of DNA. In his review of the book in Labour Monthly , John Bernal , questioned Watson's account of Rosalind Franklin's role in the discovery. A decisive breakthrough in human thought is not necessarily the work of an individual genius but only of a pack of bright