observations, carrying instruments, &c.; two sergeants, two corporals, and twenty-four privates of the Fourth Infantry. Two chief packers, three hunters and herders, and twenty packers, completed the party.
There were one hundred and seventy-three animals with the command,--seventy-three for the saddle, one hundred for packing.
The field of Captain McClellan
's exploration lies in the western part of Washington Territory
The river Columbia
from Fort Okinakane, at about the forty-eighth degree of north latitude, flows in a southerly direction, a little inclining to the cast, till it reaches Fort Walla-Walla.
Then it makes a sudden turn to the west, and runs to the Pacific
in a course nearly at right angles to its former current.
The space enclosed between these two arms of the river on the south and cast respectively, and the ocean on the west, is partly filled up by the Cascade Mountains
, a continuation of the Sierra Nevada Range
, and deriving their name from the fact that the Columbia
breaks through them in a series of falls in its passage to the ocean.
's course from Fort Vancouver
was in a northeasterly direction, along the dividing line between the stream flowing westwardly into the Pacific
and eastwardly to form the Yakima
, which is an affluent of the Columbia
The party, starting from Fort Vancouver
July 24, as has been said, reached the river Wenass
on the 20th of August, having travelled one hundred and sixty-two miles. Here a pause of some