Friday, June 25. But in the morning the sky is overcast and every now and then there is a loose shower. Of course my boon companions are not ready again until long after 9 o'clock, and then the engine will not go again, so a longer delay. They were inclined, in fact, to "lay over," but I urged them on. But they are determined if it rains a bit more to "tie to" somewhere. Fortunately there is no wind. About 3 miles below Koyukuk and its flats, the high bluffs with steep more or less shaved-like barren slopes recommence. A gloomy day. About 7 miles down, after a large rocky promontory, a small graveyard on the side of a hill, with a little native camp about a third of a mile beyond. 10.45 a. m. Beautiful wooded great hills, 400 to 800 feet high, all along the right bank again, with large ~V~-shaped valleys between. A fine, rounded, slightly more than usually elevated island ahead. Left banks flat. Sun coming out a little; cool, but not unpleasant. No more showers, river smooth, boat making time. Blue hazy mountains far to the left front. Hills to right rocky, strata horizontal to warped, mud rocks, broad banks of sandy, gravelly or mucky materials, not consolidated, between hard strata. Now and then a small Indian camp, usually two or three tents, Indians, dogs, boats; some drying fish (not much). 11.00 a. m. Another isolated little graveyard, right slope, near an old camp. There is no possibility now of excavating any of these graveyards, for the Indians are in unpleasant disposition toward the Government for various reasons. But such a place as that near Burchell's could be excavated as soon as conditions improve. Also that above Ruby and another opposite and just below Ruby. There are no longer any superstructures left at these (or but traces), and the graves, as seen above Ruby, are near (within 2 feet of) the surface. No trace or indication of anything older than the double-grooved ax culture has thus far been seen anywhere in the valley; and large stretches of present banks are quite barren. As we approach Nulato the horizon before us becomes hilly and mountainous. The sun is now fully out and its warmth is very pleasant. Pass an Indian woman paddling a canoe; later an Indian family going upstream in a motor boat. Most of these Indians possess a motor boat of some sort, and know how to run it, though it is not in their nature to be overcareful. NULATO (Pl. 1, _b_)