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it appears like grauwacke blended with angular fragments of a soft slate. Near the western base of the Laurel ridge the usual zoophytes make their appearance, chiefly Culmaria striata[13] (Striaticulmis of Martyn), also casts of enormous channelled Culmariæ like those of Bradford, in Yorkshire (England). Vegetation at this advanced season still appeared very luxuriant on the western descent of the Laurel, and the valleys bore the appearance of fertility.
12th.] This evening I arrived at Greensburgh,[14] 18 miles west of Liganier. The last considerable mountain range to the west on this route is Chesnut Ridge, {17} which I crossed to-day. Here I met with the Imperatoria lucida of Sprengel, also abundance of the Cimicifuga ameri-*
