We then went over one-half mile to locality 6 and got a lot of Lingulella like the one I for last July in the Highgate in the village of Highgate Centre. To the west occurs the Milton slate, then at a small church hole the Lingulellas. Further east is a ridge of Highgate limestones like those studied Saturday half a mile south of the Canadian border. These strata are here fearfully marked and twisted so that Keill wants to call them Breafia. To west they are all Highgate and this formation continues to the east side of Rock River. Less than one quarter mile further east occurs the low ridge of Breafia slate with the Mohawkina rocks. All of the upper Ormilton seen in the gorge this morning I should take out of the Ormilton and make a new formation of it. It differs at once from the Ormilton in being dominant limestone, and then tacked on, re- senting in this the Highgate to which it is more closely related than to the Ormilton. The thickness of this new formation is about 110 feet thick.