Ada, Oklahoma Saturday, April 1-1922 Started out at 8.30 A.M. with Mapan, Stoner and Brinad. First examined the great cement oolites at Lawrence to the southwest of Ada. Have seen very extensive quarries in the uppermost Vistla, where fossils are not easily to be seen. Much of the li. has been diagenetically altered and appears to be a propagasic li. or low dolomite. Other layers are fine li. The face of the quarry may be 20 feet high. Near fragments of Rileus, Platystophin tipata, Dreyfomera, Rafinesquina and a very large Lingula. Farther east among the quarries comes the topmost beds of the Vistla in exposure. Here Rhynchotrema capax, Plectambrites sericens etc. About 1/2 mile farther east are the quarries in the upper Sylurian shales, but some of them not the slightest fossil remains. The after ten feet dare become indurated in their beds and concretions