index. F. 403 



Page. 

 Centre valley, between Chestnut ridge and the ridge of V; the best farm 



land in Madison t. made by sand from VII, 249 



Centreville, Toboyne t., 5 



Charcoal furnaces, 102,387 



Chemung formation— See VIII /. 



11 fossils useful in working out the faults, 83 



Cheniaty (Juniata) river, . 395 



Chert beds— See VI, 4, 5. 



Chestnut ridge, Jackson t, V a, begins at Waggoner's mill, near center of 



Tyrone t., . . 231 



11 " in Madison t., described, 247 



Chestnut hills, in Jackson t., between Sherman's cr. and Houston's run ; 



ends at Beavertown, V a, iron SS., and oreSS., 230 



11 " near Centre, Toboyne t., 351 



Cissna's (Cedar) run, section V b, Madison t., 256 



Clark's mill ; fossils, 182,374 



Clark's Mill beds : see VI 6, Lewistown shales, 59,181 



Clark's (Rob.) farm, 256 



Clay ; see Brick clay, 237 



Clemson's island opposite Halifax, 395 



Cliffs— See Bluffs. 



Cliffs of Pisgah hill, VIII c 2, 157,162 



11 of VII, very tine, Centre t., 190 



" high on both sides the river, Oliver t., 278 



" of VIII-IX, in loop of river, below Milford, 282 



Clinton formation— See V a. 



" fossils in sand vein ore bed, Tyrone t., 371 



Clouser, (A.,) Centre t., . 183 



" ore banks south of Newport, . . 95 



" " Miller t., 4th outcrop of VII, 268,269 



" iron works, Oliver t., . 279 



Coal measures, 38 



Coal seams, one inch thick, found by Mr. Hockenberry, in Horse Valley 

 slates, III a, ...... 352 



Coal vainly sought, Marcellus black shale, VIII a, near Laurel Grove,90,107,108 

 " " " also in gray shales, VIII b 5, near New Germany, found by 



Mr. Smith, 3 inches thick, 341,342 



" " " also in VIII c 1 (!) Spring t., 343 



" seams, thin, in the bed of the Juniata, 108,109 



» layer in Dellville SS., base of IX, 289,395 



" " in Catskill formation, No. IX, 109 



" bed, 3' thick, in Buffalo mtn, No. X, . 153 



" bed, in Berry's mtn., No. X, 155 



" " atDuncannon; 10", 24", 30", 292 



Cochran, (R.,) 95,217 



" new ore mine, 1 m. N. of Millerstown, 363 



Cocalamus creek, Greenwood t., how it runs, 13,26,213 



Concord. Toboyne t., 349 



Conococheague mountain, No. IV, Jackson t., 8,230 



" " Madison t., 248,249; Toboyne t., 354, 300 



Contorted fossils; see Fossils, 70 



