49 



Twenty Colt's revolvers, of the navy pattern, with belts, holsters, 

 and the necessary ammunition, will be furnished by the Ordnance 

 Department ; those lost or damaged being paid for out of the appro- 

 priation for the survey. 



All other arms and ammunition for the civil employes (guides, 

 hunters, herders, &c.) of the expedition will be paid for from this 

 same appropriation. 



You are authorized to employ as assistants — 



A topographer, at a salary not to exceed $130 per month. 



One assistant topographer, at a salary not to exceed 100 '• 

 An assistant astronomer, at a salary not to exceed... 125 " 

 A physician and geologist, at a salary not to exceed 125 " 

 An assistant physician and geologist, at a salary not 



to exceed ." .' 100 " 



A meteorologist, at a salary not to exceed fJO "^ 



And to pay their actual travelling expenses to and from the field of 

 operations. 



You will procure your employes equipment, supplies, &c., at those 

 points which appear to insure the most economical and effective organi- 

 zation for your party, and prepare to take the field at the earliest 

 possible moment. While in the field attention will be given to ascer- 

 taining everything relating to the agricultural and mineralogical 

 resources of the country, its climatology, its topographical features, 

 and the facilities or obstacles which these latter offer to the construc- 

 tion of rail or common roads. 



You will communicate with the department through the office of 

 Explorations and Surveys, in charge of Capt. A. A. Humphreys, 

 Corps Topographical Engineers ; and to this office you will make the 

 reports and returns required by regulations of an officer of engineers 

 in charge of a work or operation, and such other reports, transmitted 

 as often as the means of communication will allow, as will keep the 

 department apprised of all your movements, and the progress of the 

 expedition under your charge. 



On the completion of the field duty, you will return, with your as- 

 sistants, to Washington, and there prepare the maps and reports 

 necessary to a full exposition of the results of the expedition. 

 Very respectfully, your obedient servant, 



JOHN B. FLOYD, 



Secretwy of War 

 Lieut. Gr. K. Warren, 



Oor'ps Topographiccd Engineers. 



SPECIAL ORDERS No. 26. 



Headquarters Sioux Expedition, 

 Camp near old Fort Lookout, Missouri River, June 3, 185H 



I. As it is important to obtain reliable information of the Missouri 

 river, from Fort Pierre to some point above the mouth of the Yellow- 

 stone, near which Governor Stevens' route strikes it, Sec i^a Lieu- 

 tenant Gouverneur K. Warren, Topographical Engineers, ia assigned 

 4 n 



