Kentucky, Trenton. Twenty miles of the St. Lawrence Lawn (1) the Trenton attains a thickness of 600 ft. This is at Renville, 22 miles S. of Quebec. On the Trenton Li. which finally becomes very thin (ridul [?) seen in a gulch on the N.E. side of Montmorenci Falls) it joins more gradually into the Utica. Raymond says this is Utica or the basis of graptolites of Utica time identified by Ruedemann. These shales are Hack and now there are grey shales with very thin bands of lende beds probably then sandstone. These grey shales are more called Zornaire but there is no paleontologic evidence for this re- furence. This difference in color and position on the Utica that leads to then Zornaire reference.