 In 1674 after Shaftesbury had left the government, Locke went back to Oxford, where he acquired the degree Bachelor of medicine, and a license to practice medicine, and then went to France (Cranston 1957: 160). In France Locke went from Calais to Paris, Lyons and on to Montpellier, where he spent the next fifteen months. Much of Locke’s time was spent learning about Protestantism in France. The Edict of Nantes (promulgated by Henry IV in 1598) was in force, and so there was a degree of religious toleration in France. Louis XIV was to revoke the edict in 1685 and French Protestants were then killed while some 400,000 went into exile.