The final report of the expedition will be submitted as soon after Lieut. Gibbon's return as practicable. I am in daily expectation of intelligence from him. At the latest accounts (26th of July, 1852) he was at Trinidad de Moxos, on the Mamoré, in the republic of Bolivia, making his preparations for the descent of the Madeira.

I have the honor to be, very respectfully, your obedient servant,

WM. LEWIS HERNDON,
Lieut. U. S. Navy.

CONTENTS.

CHAPTER I.
INTRODUCTORY.
Page.
United States ship Vandalia—Valparaiso—Santiago—Vicente Pazos—Preparatoryorders—Lima—Means of information—Conquests of the Incasin the Montaña—First exploration of the Spaniards—Madame Godin.[1]
CHAPTER II.
INTRODUCTORY.
Orders—Investigation of routes—Lake Rogoaguado—River Beni—Chanchamayo—Cuzcoroute—River Madre-de-Dios—Gold mines of Carabaya—Routethrough the cities of Truxillo, Caxamarca, Chachapoyas,Moyobamba, &c.—Preparations for the journey—The start.[20]
CHAPTER III.
Passports—Means of defence—The road—Pacayar—Chaclacayo—Narrowpass—Yanacoto—Bridge—Cocachacra—Tribute money—Dividing linebetween the coast and the Sierra—Moyoc—Varieties of the potato—Matucana—SanMateo—Mines of Párac—Narrow valley—Summit of theCordillera—Reflections.[39]
CHAPTER IV.
Mines of Morococha—A Yankee's house—Mountain of Puypuy—Splendidview—Pachachaca—Lava stream—Chain bridge at Oroya—Descent intothe valley of Tarma—Tarma—American physician—Customs—Dress—Religiousobservances—Muleteers and mules—General Otero—Farmingin the Sierra—Road to Chanchamayo—Perils of travel—Gold mines ofMatichacra—View of the Montaña—Fort San Ramon—Indians of Chanchamayo—Cultivation.[61]
CHAPTER V.
Division of the party—Acobaraba—Plain of Junin—Lake Chinchaycocha—Preservationof potatoes—Cerro Pasco—Drainage of the mines—Boliches.[90]
CHAPTER VI.
Departure from Cerro Pasco—Mint at Quinua—San Rafael—Ambo—Quicacan—Huanuco—Cerrode Carpis—Chinchao valley—Huallaga river.[111]
CHAPTER VII.
Itinerary—Tingo Maria—Vampires—Blow guns—Canoe navigation—Shootingmonkeys—Tocache—Sion—Salt hills of Pilluana.[132]
CHAPTER VIII.
Tarapoto—Pongo of Chasuta—Chasuta—Yurimaguas—Sta. Cruz—Antonio,the Paraguá—Laguna—Mouth of the Huallaga.[156]
CHAPTER IX.
Entrance into the Amazon—Nauta—Upper and lower missions of Mainas—Conversionsof the Ucayali—Trade in Sarsaparilla—Advantages oftrade with this country.[176]
CHAPTER X.
Nauta—River Ucayali—Sarayacu—The missionaries—The Indians of theUcayali.[190]
CHAPTER XI.
Upper Ucayali—M. Castelnau—Length of navigation—Loss of the priest—Departurefrom Sarayacu—Omaguas—Iquitos—Mouth of the Napo—Pebas—SanJosé de los Yaguas—State of Indians of Peru.[208]
CHAPTER XII.
Chochiquinas—Caballo Cocha—Alligators—Indian incantations—Loreto—Tabatinga—RiverYavari—San Paulo—River Iça—Tunantins—MakingManteiga—River Jutay—Fonteboa—River Juruá—River Japurá.[229]
CHAPTER XIII.
Egas—Trade—Lake Coari—Mouth of the Rio Negro—Barra—Trade—Productions.[250]
CHAPTER XIV.
Town of Barra—Foreign residents—Population—Rio Negro—Connexionwith the Oronoco—River Purus—Rio Branco—Vegetable productions ofthe Amazon country.[269]
CHAPTER XV.
Departure from Barra—River Madeira—Serpa—Villa Nova—Maués—RiverTrombetas—Cocoa plantations—Obidos—Santarem.[285]
CHAPTER XVI.
Santarem—Population—Trade—River Tapajos—Cuiaba—Diamond region—Accountof the Indians of the Tapajos.[299]
CHAPTER XVII.
Departure from Santarem—Monte Alegre—Prainha—Almeirim—Gurupá—RiverXingu—Great estuary of the Amazon—India-rubber country—Methodof collecting and preparing the India-rubber—Bay of Limoeiro—Arrivalat Pará.[319]
CHAPTER XVIII.
Pará.[334]
CHAPTER XIX.
Resumé.[352]
APPENDIX.
Notes—Table of approximate heights and distances from Callao to theAtlantic—Meteorological journal.[369]
Addendum[397]

LIST OF PLATES.

Page.
Plate 1.—Cathedral of Lima,([to face title page].)
Plate 2.—Yanacoto.[44]
Plate 3.—Hacienda de Moyoc.[60]
Plate 4.—San Mateo.[60]
Plate 5.—Summit of the Cordillera.[60]
Plate 6.—Mountain of Puypuy.[60]
Plate 7.—Oroya.[76]
Plate 8.—Tarma.[76]
Plate 9.—Fort San Ramon.[92]
Plate 10.—Cerro Pasco.[108]
Plate 11.—Miner.[108]
Plate 12.—Ore carrier.[108]
Plate 13.—Givaro.[172]
Plate 14.—Givara.[188]
Plate 15.—Zaparo, (Hunter).[204]
Plate 16.—Zaparo, (Fisher).[204]