It was about half past six o'clock on the morning of the 27th of October, 1865, that we left Manaos, (or as the maps usually call it, Barra do Rio Negro,) on an excursion to the Lake of Hyanuary, on the western side of the Rio Negro. The morning was unusually fresh for these latitudes, and a strong wind was blowing up so heavy a sea in the river, that, if it did not actually make one sea-sick, it certainly called up very vivid and painful associations. We were in a large eight-oared custom-house barge, our company consisting of his Excellency, Dr. Epaminondas, President of the Province,[B] his secretary, Senhor Codicera, Senhor Tavares Bastos, the distinguished young deputy from the Province of Alagoas, Major Coutinho, of the Brazilian Engineer Service, Mr. Agassiz and myself, Mr. Bourkhardt, his artist, and two of our volunteer assistants. We were preceded by a smaller boat, an Indian montaria, in which was our friend and kind host, Senhor Honorio, who had undertaken to provide for our creature comforts, and had the care of a boatful of provisions. After an hour's row we left the rough waters of the Rio Negro, and rounding a wooded point, turned into one of those narrow, winding igarapes (literally, "boat-paths"), with green forest walls, which make the charm of canoe excursions in this country. A ragged drapery of long, faded grass hung from the lower branches of the trees, marking the height of the last rise of the river,--some eighteen or twenty feet above its present level. Here and there a white heron stood on the shore, his snowy plumage glittering in the sunlight; numbers of ciganas (the pheasants of the Amazons) clustered in the bushes; once a pair of king vultures rested for a moment within gunshot, but flew out of sight as our canoe approached; and now and then an alligator showed his head above water. As we floated along through this picturesque channel, so characteristic of the wonderful region to which we were all more or less strangers,--for even Dr. Epaminondas and Senhor Tavares Bastos were here for the first time,--the conversation turned naturally enough upon the nature of this Amazonian Valley, its physical conformation, its origin and resources, its history past and to come, both alike and obscure, both the subject of wonder and speculation. Senhor Tavares Bastos, although not yet thirty, is already distinguished in the politics of his country; and from the moment he entered upon public life to the present time, the legislation in regard to the Amazons, its relation to the future progress and development of the Brazilian empire, has been the object of his deepening interest. He is a leader in that class of men who advocate the most liberal policy in this matter, and has already urged upon his countrymen the importance, even from selfish motives, of sharing their great treasure with the world. He was little more than twenty years of age when he published his papers on