"six to eight" miles thick. and more place they made a thin reef Bry- ozou are common here, and occasionally there is an Ostracous. Then follows the Amsterdam limestone eight feet thick. The contact seemed to be rather hard and many fossils are common to both. Here Stylophora incurvata and Ailenopora are very common, one or than I ever saw before. No Glum- mariu here but got a fine lead of Stromato. cerium. Rafinesquaria alternata, Pleetambonite serriceus, Phymatocrinus increscent, Jozzopbia ae- currinstra, Oithon jectiniella, Pleiothrix mica, tulla, Camarrella sp. etavanensi also occurs here. Trinuclus concentricus is somewhat common, and Lependitta fatulles[illegible] Then came the Glens Falls limestone, nodular, fourteen feet thick. Here all Ailenopora are about, but the common fossils are Tortulus pyras, Pavor- jona, Stylophora incurvata (rare), Rafinesqua alternata, Pleetambonite serriceus and many