because of the twinted character of the folding but about 25 feet. Then shale of deep purple with thin zones of 1ft.2 in. sandstone, folding Monographtes clintonensis, probably 20 feet thick. Then greenish shale with occasional layers of thin (1-2 inches) of sandstone, probably 50 to 60 feet thick up to a heavy bedded sandstone about 28 to 30 inch thick. Above the thick sandstone once greenish shale alternating once and once with thin limestone, first with a thickness of one inch, deeper up to 2 1/2 inches and finally then is an orbita with some sedimentary pebbles; about 6-7 inches thick. One or two more orbits higher up. All of these orbits belong to the Dolorina as none of the fossils below the orbits occur above it. The faunal change is not easily seen in the Ostracoda as Neophrichis Lata does not go above. Therefore most of my contourite beds all from 6a to 6d both inclusive and some of 6E pass into Dolomina. These beds are marked by Alrodania and Xlrodanilla towards the top appear the layers Rhynchospira, five striate Rhynchonella and a large Spirifer like D. par lamellana but with more flections. My 6E beds are terminated by 7 feet of dear to add fine grained sandstone on the upper surface of which appear large Leperditia. This zone should be regarded as the base of the Cenoman series or the Dullis Creek.