"Limehouse is about 3 miles north of Sea- town on the Grand Trunk R.R. The station is at the east of the cut in which the section that follows is to be seen. From the railway track up for five feet occur brick-red shales with an occasional green band. There are marked a few specimens but others are in this layer 1st, Heloprion occurs here and below to the man above. ^ The beds thin out. On these shales and apparently without break for there is some transition, hick-red occur about 5 feet of them bedded arenaceous lime- stones, that are thinly bedded and separated by thinner bands of shales. It is not this zone that most of our fossils come. The horizon is the Hamilton Clinton. Byzagra formation and belongs in the Oswego Group "Clinton beds". Then follows higher about 6 feet of green shale with very thin bands of limestone in which the Heloprion care very abundant and, it evidently belongs to the early Laurie series. See the Byzagra. and apparently with a decided break sharply upon these green shales come on some- yellow-greenish argillaceous what thinly bedded dolomites for about 8 feet and then follows another distinct section, the dolomitization of the dolomites of the Chicaguan series. All of these limestones I