The first molars are located toward the back of the mouth, next to the canine teeth. Most children cut their first molars before their canines, however, and after the lateral incisors. Toddlers on the later end of teething may not get their first molars until around 18 months old.
Or perhaps that's because so many other rivers in Oregon flow north: the Deschutes, the John Day, and the Hood. Even the Oregon portion of the Snake flows north. I do understand that in Cairo the word on the street is that, except for the Willamette, the Nile is the only river in the world that flows north.
Though it is believed that north-flowing rivers are oddities, in actuality, the only thing that influences the direction in which rivers flow is gravity. Rivers flow in whichever direction elevation descends. It is not uncommon for rivers to flow north, and many more rivers in addition to the Nile do flow north. The misconception that rivers only flow south is thought to be an indirect consequence of the way in which students learn geography.