_May 27th_.--We stopped at Sonoma the greater part of Thursday, to give our horses rest. At the hotel, I met Lieutenant Sherman, who had brought dispatches to the officer in command here from Colonel Mason. I was much delighted in again meeting with this gentleman, and we had a long talk together over the merry times we had when we were both slaying at Washington. When he heard our destination he kindly offered to give me a letter of introduction to a very old friend of his, Captain Sutter, the proprietor of Sutter's fort, and one of the earliest settlers on the Sacramento. I availed myself of his offer, and about three o'clock we started off across the plain, and made our way through the groves of fine oak trees which cover it in every direction. We next ascended the hills which lay between us and Napper Valley, and, after crossing them, made for the house of an American settler, a friend of Bradley's, who provided us with the best accommodation his house would furnish for the night. We turned in early, but the legions of fleas which were our bedfellows exerted themselves to such a degree that for hours sleep was out of the question. The country is terribly plagued with these vermin. I do not know how the settlers get on; perhaps they are accustomed to the infliction, but a stranger feels it severely. The next day we travelled over the corresponding range of hills to those crossed on Thursday, and were soon in the midst of a much wilder-looking country--a rapid succession of steep and rugged mountains, thickly timbered with tall pine-trees and split up with deep precipitous ravines, hemming in beautiful and fertile valleys, brilliant with golden flowers and dotted over with noble oaks. While we were riding down one of these dangerous chasms, Bradley, who was showing off his superior equitation, was thrown from his horse, and fell rather severely on his arm. On examining it, I was surprised to find he had escaped a fracture. As it is, he has injured it sufficiently to prevent him from using the limb for several days. I bandaged it up, put it in a sling, and he proceeded in a more cautious manner. To-night we used our tent for the first time. We were somewhat awkward in pitching it, and three times did the whole structure come down by the run, burying several of us in the flapping canvas, and inflicting some tolerably hard knocks with the poles. However, at length we succeeded in getting it fixed; and, kindling a blazing fire close to it, as a polite intimation to the bears that they were not wanted, cooked our supper over the embers, and then, wrapped in our blankets, slept far better than the fleas had allowed us to do the night before.