Critiques and AddressesFront matterReading editionChapter navigation16 reading sectionsGo to chapterChoose a chapter…Front matterPREFACE.Introductory materialI.II.III.IV.V.VI.VII.VIII.IX.X.X. (continued 2)XI.XII.Beginning of this editionNext chapter →PREFACE.All chapters and sections (16)Opening pagesFront matterOther sectionsPREFACE.Opening pagesIntroductory materialChapters12345678910101112BYTHOMAS HENRY HUXLEY, LL.D., F.R.S.1873.◇PREFACE. →