a few miles of these intricacies, we found a brisk and full tributary, below which, the descent is at once free, and on crossing the first narrow geologic plateau, the rapids begin; the stream being constantly and often suddenly enlarged, by springs and tributaries from the right and left. To describe the descent of this stream, in detail, would require graphic powers to which I do not aspire, and time which I cannot command. We were two days and a part of a night in making the descent, with every appliance of voyageur craft. It was after darkness had cast her pall over us, on the evening of the 4th of August, before we reached still water. The river is then a deep and broad mass of water, into which coasting vessels from the Lake might enter. Some four miles from the foot of the last rapids, it enters the Fond du Lac of Lake Superior. Some time before reaching this point, we had been apprised of our contiguity to it, from hearing the monotonous thump of the Indian drum; and we were glad, on our arrival, to find the chief, Mongazid,* of Fond du Lac, with the military barge of Lieut. Allen, left at that place on our outward trip, which he had promised to bring down to this point.

Having thus accomplished the objects committed to my trust, and rejoined the track described in my prior narrative, I rested here on the next day (5th), being the Sabbath; and then proceeded through Lake Superior, to my starting-point at Sault de Ste Marie.t

* From mong, a loon, and ozid, his foot. The name is in allusion to the track of the bird on the sand.

On passing through Lake Superior, I learned from an Indian the first breaking out of Asiatic cholera in the country, in 1832, and the wide alarm it had produced.

APPENDIX.

No. 1.

THE EXPEDITION TO THE SOURCES OF THE MISSISSIPPI IN 1820.

I. OFFICIAL REPORTS OF THE EXPEDITION OF 1820.

1. DEPARTMENTAL REPORTS.

I. Announcement of the Return of the Expedition. By Hon. LEWIS CASS.
II. General Report to the Department of War. By Hon. LEWIS CASS.

III. Further Explorations of Western Geography recommended. By Hon. LEWIS
CASS.

IV. Personal Testimonial on the close of the Expedition. By Hon. LEWIS CASS.

2. TOPOGRAPHY AND ASTRONOMY.

V. Results of Observations for Latitudes and Longitudes during the Expedition of 1820. BY DAVID B. DOUGLASS, Capt. Engineers, U. S. A.

3. MINERALOGY AND GEOLOGY.

VI. Report on the Copper Mines of Lake Superior. By HENRY R. SCHOOLCRAFT. VII. Observations on the Mineralogy and Geology of the country embracing the sources of the Mississippi River and the Great Lake Basins. By HENRY R. SCHOOLCRAFT.

VIII. Report in reply to a Resolution of the U. S. Senate on the Value and Extent of the Mineral Lands on Lake Superior. By HENRY R. SCHOOLCRAaft.

IX. Rapid Glances at the Geology of Western New York, beyond the Rome summit, in 1820. By HENRY R. SCHOOLCRAFT.

X. A Memoir on the Geological Position of a Fossil Tree in the secondary rocks of the Illinois. Albany: E. & E. Hosford, pp. 18, 1822. By HENRY R. SCHOOL

CRAFT.

4. BOTANY.

XI. List of Plants collected by Capt. D. B. Douglass at the sources of the Mississippi River. This paper has been published in the 4th vol. p. 56 of Silliman's Journal of Science. By Dr. JOHN TORREY.

5. ZOOLOGY.

XII. A Letter embracing Notices of the Zoology of the Northwest, addressed to Dr. Mitchell on the return of the Expedition. By HENRY R. SCHOOLCRAFT.

(1.) FRESH-WATER CONCHOLOGY.

XIII. Species of Bivalves collected by Mr. Schoolcraft and Capt. Douglass in the Northwest. Published in the 6th vol. Amer. Journ. of Science, pp. 120, 259. By D. H. BARNES.

XIV. Fresh-water Shells collected by Mr. Schoolcraft in the valleys of the Fox and Wisconsin Rivers. American Philosophical Transactions, vol. 5. By Mr.

ISAAC LEA.

(2.) FAUNA: ICHTHYOLOGY: REPTILIA.

XV. Summary Remarks respecting the Zoological Species noticed in the Expedition. By Dr. SAMUEL L. MITCHELL.

XVI. Mus Busarius. Medical Repository, vol. 21, p. 248. By Dr. SAMUEL L. MITCHELL.

XVII. Sciurus Tredecem Striatus. Med. Rep. vol. 21. By Dr. SAMUEL L. MITCHELL, XVIII. Proteus of the Lakes. Am. Journ. Science, vol. 4. By Dr. SAMUEL L. MITCHELL.

6. METEOROLOGY.

✓ XIX. Memoranda on Climatic Phenomena, and the distribution of Solar Heat, in 1820. By HENRY R. SCHOOLCraft.

し

7. INDIAN LANGUAGES AND HISTORY.

XX. A Pictographic mode of communicating ideas by the Northwestern Indians. By Hon. LEWIS CASS.

XXI. Inquiries respecting the History, &c. of the Indians of the United States. Detroit, 1822. By Hon. LEWIS CASS.

XXII. A Letter on the Origin of the Indian Tribes of America, and the Principles of their Mode of uttering Ideas. By Dr. J. M'DONNELL, Belfast, Ireland. XXIII. Difficulties of studying the Indian Tongues of the United States. Schoolcraft's Travels in the Central Portions of the Mississippi Valley, p. 381. By Dr. ALEXANDER WOLCOTT, Jr.

XXIV. Examinations of the Elementary Structure of the Odjibwa-Algonquin Language. First paper. By HENRY R. SCHOOLCRAFT.

XXV. A Vocabulary of the Odjibwa-Algonquin. By HENRY R. SCHOOLCRAFT.