INDEX. 
649 
Smith's river . 
Snake river ........... 
valley. 
course . 
geology..... 
Snoqualme Pass ..... 
examinations and practicability of. 
tunnelling.— . 
snow in pass. 
Tinkham’s winter trip through, and report. 
Snoio in mountains ..... 
distribution of. 
in Cascade mountains. 
in Snoqualme Pass, Tinkham’s report. 
in Marias Pass. 
summary on... 
on route from Fort Benton to Fort Dalles. 
(See reports on Meteorology.) 
Snow mountains . 
Soil, summary on... 
Spilyeh river .. 
Spokane river . 
and valley. 
plain. 
geology. 
Indians. 
river, plain, and Indians.. 
Square buttes ... 
Stanley, Mr. J. M., artist.... 
report of his visit to Piegan camp. 
memoranda on sketches. 
Steilacoom as a terminus. 
Steilaquamish river ......... 
Stevens, George A., observations.. 
report on latitudes and longitudes. 
Stevens, Governor 1.I., instructions to. 
camp Pierce, report. 
synoptic report of route, &c., dated Olympia. 
instructions to McClellan. 
instructions to Tinkham, Cascade mountains. 
report of Arnold’s route.. 
report of McClellan’s, Tinkham’s, and Mullau’s operations 
letters to Secretary of War. 
letters with Mullan’s reports.. 
letter with Doty’s reports.... 
letter with main report to Secretary of War. 
St. Joseph's ..... 
St. Mary’s village . 
valley. 
exploration... 
snow, &c.. 
meteorological observations. 
river. (See Bitter Root river.) 
Stone .. 
St. Paul, rendezvous. 
mission.... 
river at... 
climate at...... 
St. Regis Borgia river . 
Suckley, Dr. George, surgeon and naturalist.. 
instructions to... 
meteorological observations. 
82 / 
Page. 
. 311-312 
. 105,108,285, 330-330,513,535 
. 102 
. 105 
. 485 
25 
117-120,617,624 
117-120 
622 
... 184-186,621 
... 97,625-628 
... 128,139-140 
182 
184-186,629-631 
281 
452,631 
498-515 
. 309-310 
. 451 
. 205 
. 215-216,512 
. 107 
. 197,216,281,284 
. 484 
. 414-415 
. 256-257 
. 243 
. 4,67 
.. 444-449 
. 7-8 
. 113,183 
. 471 
. 450,464 
.. 540-541 
.. 73-74,449 
. 13-14 
.. 52-59 
. 203 
. 617-619 
. 619-620 
. 620-622 
. 450-453,631-633 
.. 515,537 
. 542 
. 450-453 
.. 235-237 
... 53,171,251,261,286-287,291 
79,102,168,279, 300,558-559,626 
.. 59-61 
.. 61-62 
. 572-584,585-598 
. 92-95,103,109,123 
. 77 
.. 299 
. 89 
. 130-131 
. 559-560 
. 76 
. 64,68 
. 463 
