430 F\ REPORT OF PROGRESS. E. W. CLAYPOLE. 



Page. 

 Group VIII "6 .;, Marcellus iron ore. 



■• outorop zigzags over Spring t; mines numerous, 340 



11 50* over VII; Inexhaustible quantities, 340 



11 abundant west of Perry furnace, 341 



'• diggings abandoned S. W. of Little Germany, 341 



•• not seen in Tusoarora t, .... 364 



" VI 1 1 6 t. 5, dug on high knoll opposite Oak Grove furnace, Tyrone t., 375 

 Group VHIb r>, Marcellus black shales. 



" loo thick; described, 64 



" passes up into VII] c 1, I Iain, lower shale, 65 



" ferruginous, pyritous, lull of Sporangites, 65 



" described in Center t., 195,196 



'• with VIII c 1 makes a deep valley, Center t., 196 



" exposed best at Barnett's rocks, on Dorran's run, Juniata furnace ore 



banks, ('cuter t., . . 196 



• Beet occasionally on X. slope of Wildcat ridge, Greenwood t., ... 219 



" displayed bet. Bixler's mills and Sandy hill, Madison t., 262 



" Sulphur spring near Sandy hill, Saville t., 325 



" best displayed in Spring t., at quarry near Little Germany, .... 341 



" makes excellent road metal, 341 



" some lower solid beds calcareous, 341 



" no fossils except minute Spoi-angia, 341 



" 80', whole thickness exposed at Rice's bet. school-house and saw-mill 



near N. Germany, Spring t, 342 



" gradual transition upward into rusty, ochreous, pink-gray shales of 



VIII el Rice's, . . . ... 342 



" seen at low water in Juniata, Watts t., 379 



Formation VIII c, Hamilton shale and sandstone. 



" 900', described, 66 



Group VIII c 1, Hamilton lower shale. 



'• 400' to 500' soft shales; lean soil; valleys, 66 



•• in Centre t. described ; exposures rare, 197 



•• wooded valley across Oliver t. , 279 



" thins to 0' at Susquehanna river, in Rye t., 313 



•• covers much of S. W. and central Saville t., 326 



" undulated westward; poor land. . . 326 



" northern outcrop runs along X. slope of Raccoon ridge, 326 



'• middle beds become very sandy in Saville t.. much resembling VIII 

 c 2; differs, however, in being even, thin-bedded, hard, dark green 



.... 326 



extensively outspread in Spring t., .... 343 



fine outcrops at W. end of Mahanoyand Crawley hills, .... 343 



fine section on road from Little Germany to McAffee'e mill, . . . .343 



fine exposure along Little Germany fault valley, 343 



very barren of fossils; white meager soil, 343 



usually covered with forest, as in Tusoarora k, . . 864 



mal it show in Wheatfleid t. ; peculiar whitish soil, . . . 389 



!'///>■.. Hamilton (Montebello) sandstone. 



hill ranges described, 16 



600 U> 800\ Monte beUo sandstone, high rough ridge, 66 



