In the north the Beekmantown is usually an Archey, Torr. and Ala. It is very shaly, and it is the difference that has led Ulrich to conclude that it is before an older series. Stone, Banks, and Butts are the three great upheavals of Ulrich's Argentine. It appears that Ulrich has not by taken up at the top one member of the Argentine but has as much done so at the bottom. The largest sequence and the most prolificous are as of the Argentine much in sandstone in Ala. and now described by Butts in Torr. Ala. Follies. Under these circum- stances, it can be best to place all of the Argentine with the Beekmantown as one system in the Ordovician. The only our hemisphere have the Appala- Chian trend and ascending ones lie in the App. forecline. See about this paleography.