"The snows have formed a hard, coarse bed without crust, on which the horses walk safely without slipping; the chief difficulty, therefore, is to find the road. In this we may be assisted by the circumstance that, though generally ten feet in depth, the snow has been thrown off by the thick and spreading branches of the trees, and from round the trunk; while the warmth of the trunk itself, acquired by the reflection of the sun, or communicated by natural heat of the earth, which is never frozen under these masses, has dissolved the snow so much that immediately at the roots its depth is not more than one or two feet. We therefore hope that the marks of the baggage rubbing against the trees may still be perceived; and we have decided, in case the guide cannot be procured, that one of us will take three or four of our most expert woodsmen, several of our best horses, and an ample supply of provisions, go on two days' journey in advance, and endeavor to trace the route by the marks of the Indian baggage on the trees, which we would then mark more distinctly with a tomahawk. When they should have reached two days' journey beyond Hungry Creek, two of the men were to be sent back to apprise the rest of their success, and if necessary to cause them to delay there; lest, by advancing too soon, they should be forced to halt where no food could be obtained for the horses. If the traces of the baggage be too indistinct, the whole party is to return to Hungry Creek, and we will then attempt the passage by ascending the main southwest branch of Lewis' River through the country of the Shoshonees, over to Madison or Gallatin River. On that route, the Chopunnish inform us, there is a passage not obstructed by snow at this period of the year."