History of the Harvard College Observatory During the Period 1840-1890Front matterReading editionChapter navigation9 reading sectionsGo to chapterChoose a chapter…Front matterPREFACE.HISTORY OF THE HARVARD COLLEGE OBSERVATORY. 1840–1890.II.III.IV.V.VI.VII.Beginning of this editionNext chapter →PREFACE.All chapters and sections (9)Opening pagesFront matterOther sectionsPREFACE.HISTORY OF THE HARVARD COLLEGE OBSERVATORY. 1840–1890.Chapters234567Reprinted from the Boston Evening Traveller.◇CAMBRIDGE. 1890.◇PREFACE. →