Cherry Creek, one of a number of small streams on this side of the river, flows through the eastern part of this valley, and empties into the Yakima River about one mile below Thrall on Section 31, Town 17, North of Range 19 East. Here, the river enters Yakima Canon which cuts through Umptanum Ridge and the western foothills of Saddle Mountains. There are some pines in this canon. Selah Creek flows through Selah Canon from the east and empties into the Yakima, about one mile above Selah at the northwest corner of Section 16, Town 14, north of Range 19 East. This is in a broad valley below Yakima Canon. At the time of our visit, however, the lower portion of this creek was dry. Wenas Creek empties into the Yakima from the west, nearly opposite Selah. North Yakima is on the western side of the Yakima River, about two miles below the mouth of the Naches, which empties into the Yakima from the west, immediately below where the latter breaks through Yakima Ridge. This break is called the Gap or the Upper Gap. North Yakima is at an altitude of 1067 feet above the sea level. The soil of the valley is made up of a rich volcanic ash and the region is arid and practically treeless except on the banks of the rivers and creeks or where irrigation has been successfully practised. The climate in most respects resembles that of the southern interior of British Columbia, lying to the north, but in general, there is less vegetation except on irrigated land. Cowiche Creek flows from the southwest and empties into the south side of the Naches, at a point about three miles above its mouth. Tampico is situated on Section 17, Town 12, north of Range 16 East, on the north side of Ahtanum Creek, which flows nearly east along the base of the north side of Rattlesnake Range and empties into the Yakima at Union Gap or Lower Gap, below Old Yakima. Fort Simcoe is located in a cluster of live oak trees, on one of the branches of Simcoe Creek, which flows in an easterly direction and empties into the Toppenish River, a western feeder of the Yakima. This place is at an altitude of 937 feet above the sea level and is surrounded by 'scab' land. Going west from Fort Simcoe, up the slopes of the Cascade Mountains, a mile or so, one notices timber in the valleys, and as one proceeds still further up the mountains, the timber becomes thicker and of greater size. This is the beginning of the forest, which at the west side of the Cascades becomes so remarkably dense. To the east of Fort Simcoe, however, no trees are seen, except in the bottoms along the streams, while on the lower reaches of the Yakima and on the banks of the Columbia, east of here, there are absolutely no trees.