DiscoursesFront matterReading editionChapter navigation14 reading sectionsGo to chapterChoose a chapter…Front matterPREFACEIntroductory materialIIIIIIIVVVIVIIVIIIIXXXIBeginning of this editionNext chapter →PREFACEAll chapters and sections (14)Opening pagesFront matterOther sectionsPREFACEOpening pagesIntroductory materialChapters1234567891011DISCOURSES:BIOLOGICAL & GEOLOGICAL◇ESSAYSBYTHOMAS H. HUXLEY1894◇PREFACE →