White. The highest point reached was Wallula, the site of the old Hudson's Bay fort. The current was a powerful one to withstand, no soundings had ever been made, and no boats except canoes, bateaux, flatboats, and a few small sailboats, had ever made the trip. No one had any conception of the location of a channel adapted to a steamboat. No difficulty was experienced, however, except at the Umatilla Rapids. This is a most singular obstruction. Three separate reefs, at intervals of half a mile, extend right across the River. There are narrow breaks in these reefs, but not in line with each other. Through them the water pours with tremendous velocity, and on account of their irregular locations a steamer must zigzag across the River at imminent risk of being borne broadside on to the reef. The passage of the Umatilla Rapids is not difficult at high water, for then the steamer glides over the rocks in a straight course.
In the August Overland of the same year, Captain Coe narrates the first steamboat trip up Snake River. This was in June, 1860, just at the time of the beginning of the gold excitement. The Colonel Wright was loaded with picks, rockers, and other mining implements, as well as provisions and passengers. Most of the freight and passengers were put off at Wallula, to go thence overland. Part continued on to test the experiment of making way against the wicked-looking current of Snake River. After three days and a half from the starting point a few miles above Celilo, the Colonel Wright halted at a place which was called Slaterville, thirty-seven miles up the Clearwater from its junction with the Snake. There
