limestone. I soon had a large piece of li with a cup tetradral and crystalline spfs that may have been Eridiphyllum. Iron Out better, the student with us, picked up a good but small Alveola reti cularis miserabilis, and later one for also the revolution Al reticularis, and Spirifera Whitrogi. This then made it clear that we have here 2 to 30 feet of thick redded apgresian limestone of Upper Devonian age. Ian followed a vertical scale of thin limestone that I suspect in the Madion limestone. All that are far of fresh come two small tetracralles that were Aren- pbyllum; they had no Chumella. After of comes the Pennsylvanian with Spirifera cameronatus. Unfortunately the time was too short to investigate the li above the Devonian. All the shata stand vertical, and all are folded at one time, presumably towards the close of the Paleozoic or the Cretaceous.