Difficulties of the subjectâLesson to be learnedâThe pursuit of knowledgeâRecent AdvancesâPrehistoric past of the Old WorldâOf the NewâOf Mexico and the SouthâThe Isles of the PacificâSimilar nature of the relicsâThe wonders of the present ageâHistory of popular Opinion on this subjectâThe teachings of the BibleâNature of the evidence of man's antiquityâGeologyâAstronomyâUnfolding of lifeâNature of our inquiry.