species, legend being the tradition of those who are not in the habit of writing, while history, which is a sort of scientific activity, presupposes practice in writing. At the same time the writing down of an historical tradition serves to fix it, whereas oral tradition cannot remain uncorrupted for any length of time and is therefore inadequate to be the vehicle of history. Now it is evident that Genesis contains the final sublimation into writing of a body of oral traditions. The tales of the