PARTIAL RESULTS OF EXPLORATION. 453 
can be reached from the Bois de Sioux by crossing the Missouri and Yellowstone, and thus 
abridging distance. 
Winter examinations to be continued. 
I will here observe that, through the Indian agents and sub-agents, [ shall be able to get a large 
body of meteorological observations with but little additional expense, except the cost of instru- 
ments. I will recommend that, whatever operations the department may think advisable to be 
carried on, on this route, the operations of the fall and winter be restricted to the examination of 
the lower Columbia and the line of the Snoqualme Pass, and that next spring and summer the 
operations eastward be vigorously pushed. 
I will state that, in counexion with the Blackfoot council, I shall make my arrangements to 
leave the Sound in April, to reach Fort Benton late in June, and, remaining there six weeks, to 
return and reach the Sound again in October. I refer to this to show with what ease I shall be 
able to direct the operations in the field. 
My feeble health, the last seventeen days, will explain the delay which has occurred in trans- 
mitting this report. It has only been within a day or two that I have been able to do much 
work. 
Iam, sir, very respectfully, your most obedient servant, 
ISAAC I. STEVENS, 
’ Governor of Washington Territory, in Charge of Exploration. 
Hon. Jerrerson Davis, 
Secretary of War, Washington, D. C. 
N. B.—Besides the railroad profile referred to in this report, I send the profiles of the route of 
the main train. The railroad line was got in through the labors of the civil engineers, Messrs. 
Lander and Tinkham, who were constantly occupied in side reconnaissances, and is the result of 
the observations on the main trail; of careful observations, by the barometer, of prominent land- 
marks off the main trail; and of careful observations of the course of streams, and the general 
trend of the country. 
I send also the two sheets giving the work in detail. But Iam now engaged in a careful re- 
adjustment of the latitudes and odometer survey to the longitudes determined by Wilkes and 
Nicollet, which will occupy me some two or three days, and which will be made the basis of a 
special report. 
LIST OF LATITUDES. 
Date. Place. Star observed. Deduced lati- Mean. 
tude. 
CL wh we (Cy 7 u 
(Chinyt LO Sicocooacece ceodes edcbdnedhio noses WUIGiP ese0es cossohe 45 35 12 
EWES coceas eeancs 17 45 35 14.5 
June 16 and 17....-.. Danilo Rin icnirGrPanecess seoceciesessd nonces Alltainescsee esac cas 45 27 00 
PONS es eseei see 27 00 
Theta. << sajyesiscins 27 07 45 27 02 
Camp Marcy, Pike lake....-2..........c0---- 1G) Div ee pees ence 45 44 26 
June 26... 5-2. scene. ANG os ele tee ccs sce sacs osecieees Polaris\-eaeeesteesee= 45 57 08 
- 45 57 07 45 57 07.5 
DWHIKPRICE RIV EL.\0 occ cionas cose eccssceosieees Theta. --- «<s2-.=5- 
Camp McClelland, Shayenne river ..........-- IW Cloaciocecocases 46 35 58 
36 03 46 36 00.5 
July 8 ..-006 eee. ----| Second Shayonne Crossing-.......----.-.-+-+ Polarisynccessee==- 47 27 36 
33 47 27 34,5 
July 10a casicanass|) UBKD DEsEOtaacduitasaeauwecas scdaleabuadeda 
