Bunyan's Pilgrim's Progress

Two other changes adapt this edition to its particular use. Bunyan's marginal explanations, though they are sometimes racy, are now quite superfluous for people accustomed to read currently; and the marginal references to the Bible are equally superfluous for a generation well supplied with concordances. Moreover these marginal notes, if indeed they were used, might be a distraction, instead of a help, in the school study of literature. Therefore they have been omitted.