"At North Mountain the first formation to come on are a series of green shales and some of impure limestone the Oriskany in the later phase of Onondaga. I am not certain of this as Stylophoria occurs here along with an abundance of Ostracods. This lighter colored Onondaga has a thickness of not more than 30 feet. Then follows the Haech Marcelus with large con- cretions that are more lying by far than the shales, and that are horizontally bedded, not in rings as concretions, usually me. Some of these lumps are 4 foot or more long. They are sometimes ground around in the thrusting, though the shales have often thrown more ridges around the ends. On either side the shales are boiled out. Cherry Run, Va. Most of the station The B & O has put in another track and hee therefore line at the stream limits cut down considerable of the old road face or that there is now a far better exposure than, at any previous time. This is near South Cherry, one mile away from the County Before at these one have at least 10 foot exposed of thin bedded knotty limestone that seems to agree with the Tondroyg. But a lot of small Chirostella. Then follows upward a series of evenly bedded dark blue thin bedded limestones with little shale partings. This series is 55 feet thick. The basal foot is crowded with names On the specimens tygonra. The upper 20 feet are decidedly heavier bedded