the seventeenth andeighteenth centuries, a totally new conception was developed whenscientific texts were accepted on their own merits and positionedwithin an anonymous and coherent conceptual system of estab-lished truths and methods of verification. Authentification no longerrequired reference to the individual who had produced them; therole of the author disappeared as an index of truthfulness and,where it remained as an inventor's name, it was merely to denot