In the afternoon called on Whicl at 2421 First street. There met his sister and Mrs Which, Cincinnati family. Later had considerable of Whicl geologically. Told him of my last summers Medina - Clinton discoursis. He was glad to get it but finally said it was what was to be expected. Thought that the Ohio Clinton was equivalent in time but not of the same era connection as some part of the Rochester upper Clinton. This maybe or but I am inclined to look upon it as older than any New York Clinton. I then asked Which to give me a sketch of his present views of the Reedmantom - Chazy. This "Ordovician" embraces the upper - Cambrian or Lanatogran and a part of Ordovician time beneath the Reedmanturn. This is a period of oscillation and once again 3 paleographic maps to make clear. The Reedmanturn is a long period of gradual inundation and one paleographic map will be enough. Then follow what may be called Chazy time, another period of oscillations. Will require three maps bringing out the lower and middle Chazy.