CHAPTER 21.
Reading edition
1865-1868: AGE 58-61.
Letter to his Mother announcing Journey to Brazil.—Sketch of Journey.—Kindness of the Emperor.—Liberality of the Brazilian Government.—Correspondence with Charles Sumner.—Letter to his Mother at Close of Brazil Journey.—Letter from Martius concerning Journey in Brazil.—Return to Cambridge.—Lectures in Boston and New York.—Summer at Nahant.—Letter to Professor Peirce on the Survey of Boston Harbor.—Death of his Mother.—Illness. —Correspondence with Oswald Heer.—Summer Journey in the West. —Cornell University.—Letter from Longfellow.