C. S. Smith. 847 Amizophyllum Agassiz. Nucleospina concentrica Rhyndaspis frumna Bath Spgs. 848 Amizph. Agassiz; Aeicystites Anna. Spirifus Suffredi. Nuclosp. concentrica Rhyndaspis globosa Rhyndospinafrumma. 817. Nearly 4 miles from river at Clifton caps ridge overlooking Eagle creek. Silicious grp. partly concealed, 53 ft. Black Shale (Waverly here) 50 ft. (34 ft thick shale, 8 ft finegrained SS in it, Gingula sulspatulata, 8 ft massive SS) Lower Helderberg 25 ft. gray crinoidal, fossils scarce at this point. Merrizous l. Spruge bearing bed 90 ft highly fossiliferous (Where measured. Was this measured on Eagle creek? Variegated bed (includes Os good + Clinton) 96 feet. Merrizous spruge bed first all measured 4 mi. E of Clifton, and Varieg. at Clifton. 835. Lower Held. in valleys of Dunstan and Hardins creeks is generally wanting, locally in thin beds. Low. Held. absent in upper part of valley of Buffalo but on map begins at Flat Woods and goes down to Linden. Bell no drill at Linden. Black Shale Linden. Lower Helderberg. Loaded with fossils. 842 On Buffalo River in Perry county, F. Frazz. 835 3 miles below Bearstone on Buffalo R., Black Shale. Bill Edwards. Lower Helderbg. 30 ft. loaded with fossils, Merrizous bed. Four miles above mouth of Buffalo, by a local swell, it is exposed in a Bluff. Lower Held. 50 ft. Nearest place is Bakerville. Nearest land- ing is Cuba. Good Stopping place. 2½ miles, not far from Dudley's Ferry. Dr. Whitfield. Mapped from edge of Hickman to Mentgnercy well on Duck river, but not in Humphreys on Duck river. However it states in text; — Lower Held. along valley of Duck river scarcey reaches Hickman Co. Decatur Co. 831 In the southern part of Barton, well developed at a number of points. L.H. 840. Tributary of Birdcagle in southern part of Barton Co. 836. Low. Held. Commencing at mouth of Big Sandy and extending up valley 5 or 6 mi; 839. Williams Mill, about 5 mi. above mouth. Orange sand + gravel. Lower argillaceous masses, fossils, several layers of gray limestone. Black shaly limestone, 50 feet.