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, I 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 connexion 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. 
I am, sir, very respectfully, your most obedient servant, 
ISAAC I. STEVENS, 
Governor of Washington Territory, in Charge of Exploration. 
Hon. Jefferson 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 I am 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¬ 
tude. 
Mean. 
o / // 
o / // 
Camp Davis....______............ 
Theta.----- ....... 
45 35 12 
Polaris. 
17 
45 35 14.5 
Juno 16 and 17......> 
Ford of Sauk river_...... ........._ 
Altair...____ 
45 27 00 
Polaris___ 
27 00 
Theta.. 
27 07 
45 27 02 
Camp Marcy, Pike lake........ 
Polaris_...... 
45 44 26 
,Tunc 26............. 
Lake ———____ _ 
Polaris__ _ 
45 57 08 
45 57 07 
45 57 07. 5 
Wild Rice river......,. 
Theta___ 
Camp McClelland, Shayeune river. 
Polaris___...... 
46 35 58 
36 03 
46 36 00.5 
July 8 .............. 
Second Shayenne Crossing_...___ 
47 27 36 
33 
47 27 34. 5 
July 10............. 
Lake Jessie................................ 
