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REPORT

OF

THE SECRETARY OF WAR,

IN COMPLIANCE

With a resolution of the Senate of the 9th ultimo, calling for a copy of

the report of Lieutenant G. K. Warren of his exploration of the country between the Missouri and Platte rivers and the Rocky Mountains, iogether with the maps accompanying the same.

May 7, 1856.—Read ; motion to print referred to the Committee on Printing.
May 14, 1856.- Report : “ resolved that it be not printed." Mr. Weller, to amend by

striking out the word “not.” Postponed until to morrow. May 22, 1856.-Amended, considered and agreed to. Resolution agreed to as amended.

WAR DEPARTMENT,

Washington, May 5, 1856. SIR: In compliance with the resolution of the Senate of the 9th ultimo, I have the honor to transmit, herewith, a copy of the report of Lieutenant G. K. Warren, of the United States Topographical Engineer Corps, of his recent exploration of the region of country between the Missouri and Platte rivers and the Rocky Mountains, with the maps accompanying the same. Very respectfully, your obedient servant,

JEFF'N DAVIS,

Secretary of War. Hon. J. D. BRIGHT,

President pro tem of the Senate.

WAR DEPARTMENT,

Washington, March 26, 1856. DEAR SIR: The Topographical Engineer, Lieutenant G. K. Warren, on General Harney's staff, during the past year's campaign in the region between the Missouri and Platte rivers and Rocky Mountains, has addressed a brief and interesting report (accompanied by a map) to that officer, which contains much useful and newly acquired information respecting the country and routes, rivers and streams traversing it, &c. The report and maps should be printed, as they will be very useful to the troops on that frontier and to travellers and emigrants. Very respectfully and truly yours,

JEFF’N DAVIS. Hon. John B. WELLER,

Chairman Committee on Military Affairs, Senate.

BUREAU OF TOPOGRAPHICAL ENGINEERS,

Washington, April 10, 1856. SIR: In compliance with a resolution of the Senate of the 9th instant, I have the honor to submit the report and map of Lieutenant Warren, called for by that resolution. Respectfully, sir, your obedient servant,

J. J. ABERT,

Colonel Corps Topographical Engineers. Hon. JEFFERSON DAVIS, Secretary of War.

WASHINGTON D. C., April 9, 1856. Sir: I have the honor to transmit herewith a copy of a report, made by order of Brevet Brigadier General W. S. Harney, commanding “Sioux Expedition,” of my explorations in the Dacota country during 1855, as topographical engineer to the expedition.

It is accompanied by one map on a scale of 1: 600,000, and another on a scale of 1: 300,000, giving the localities of the Indians, and certain vague information obtained from hunters of country not yet erplored instrumentally. These maps contain nearly all the reliable map information concerning Nebraska.

There is also a barometric section of the country between Fort Pierre and Fort Kearny.

In the Appendix to my report will be found an interesting memoir, from Dr. F. v. Hayden, of examinations lately made by him in Nebraska. I am sir, very respectfully, your obedient servant,

G. K. WARREN,

Lieutenant Topographical Engineers. Colonel J. J. ABERT,

Chief Topographical Engineer, Washington City.

CONTENTS.

ROUTES EXPLORED.

Page

RIVERS.

APPENDIX B.

Page

Survey of Fort Pierre reserve—Reconnaissance from Fort Pierre to Big Shyenne, and

sketch...

35

APPENDIX C.

Report of September 4, 1855, and sketch of battle ground at Bluewater creek ....... 33

APPENDIX D.

Meteorology-General remarks and explanations—Notes on the weather— Table I. Ob

servations, altitudes, and distances from Fort Pierre to Fort Kearny–Table II. Distances and altitudes from Fort Kearny to Fort Laramie-Table III. Hourly psychrometrical observations—Table IV. Elastic force of vapor, hourly—Table V. Elastic force of vapor, 7 a. m., 2 p. m., and 9 p. m.—Table VI. Hourly observations of barometer No. 1014— Table VII. Hourly observations of barometer No. 1013—Table VIII. Observations for altitude of Fort Pierre-Table IX. Corrections for daily curve of pressure.

APPENDIX E.

Geological note on section in ravine of l'Eau qui Court river, by W. P. Blake- Geological

notes on Nebraska, by Dr. F. V. Hayden-Hydrographical basin of the MissouriSystem of waters-Sub-systems—l'Eau qui Court-White river-Teton or Bad river-Shyenne river_Moreau, Grand, and Cannon Ball rivers-Little Missouri river-Right and left forks of the Missouri, James and Big Sioux rivers—GeologyCarboniferous system, Cretaceous system-Tertiary system—Tertiary basin-Lig. nite basin-Bad Lands of the Judith— Timber—"Bluff formation"-Dorion's Hills-Côtes Brûlés—Cedar Islands, below White river-Bear Butte-Tour from Fort Pierre to the Bad Lands and back--Eagle-nest Butte-Splendid view in the Bad Lands-Fossils from the Bad Lands-Peculiarity of atmosphere-ClimateGeographical distribution of plants and animals...

MAPS.

1. Map of a portion of the Dacotah country, on a scale of 1 to 600,000, embracing all the es

plorations within the limits compassed by it, including those of Major Long, J. N.

Nicolet, Captain Fremont, and Captain Stansbury. 2. Map, on a scale of 1 to 300,000, giving location of the different bands of Indians, and

such other information as could be obtained from the trappers and hunters. 3. Barometric profile of route from Fort Pierre to Fort Kearny

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