INDEX. F 2 . 431 



Page. 

 Group VIII c 8, Hamilton (Montebello) sandstone. 



" thinner in Pfontz's valley, 07 



" very thick at Marysville, 68 



" high ranges in Centre t. mostly cultivated, 197 



" sink-holes numerous along strong bold outcrop, 197 



11 600' in gap of Centre t., 201 



" Middle beds well exposed in Crawley's ridge, 201 



" soft middle member, in which streams zig-zag, 203 



" section, Centre t., 203 



" in Wild Cat ridge ; high, hard, and solid near Juniata river ; grows 



soft and shaly, smoother ridge, eastward into Liverpool t., 219,220 



" consequently, ridge low in Liverpool t., and Pfoutz's valley not so 



isolated as in Greenwood t., 241 



" scarcely enters Howe t., . . . . . 223 



" makes Turkey and Wild Cat ridges in Liverpool t., but softer, shaly, 



less sandy, ridge slopes easy, and cultivated to their tops, 243 



" four outcrops in Miller t., ... .270,271 



" makes rapids in Juniata river, Buffalo Hill gap, Miller t., . . 270 



«« Buffalo hills, in Oliver t., rugged; dip 75° N. N. W., flattens to 25° 



to 30°, 279 



" source of the sand, . . . .309,310 



" Little mountain, in Rye t., steep, rough, wooded ; crest a pile of dis- 

 jointed blocks, 313 



" 800' complete section on Susquehanna river, where the formation is 



thickest, . . . . 313 



11 solid, hard middle beds, thinner shaly beds above and below, on 



Susq. river, Rye t., 314 



11 Bilman ridge, Saville t., . 321 



" Middle bed imitated by VIII c 1, locally in Saville t., 326 



" bold outcrop in Buffalo hills, Saville t., 327 



" folded; gapped by Buffalo creek ; dip 30°+, 327 



" Raccoon ridge, Saville t., 327 



11 Mt. Pisgah, at synclinal angle, Spring t., 344 



" steep rough-wooded range across Tuscarora t., 364 



M makes converging ridges, rough country in northern part of Watts t., 379 

 " doubled from 800' to 1800' by the Perry co. fault in Half Falls mtn. ; 



universal dip 40° to 50°, 380 



" crest of Dick's hill faulted up in Wheatfield t., dip 30° to 90° in short 



distance, 389 



Hamilton fossil ore, described, 99,100 



" in Centre t., described, 204 



" not mined in divert., 280 



" 360' above base of VIII c 2, 314 



" exposed at signal-box at Junction R. R., Rye t., 314 



" never opened in Spring t., 31.1 



" in Watts t., only opened at Oirty's notch, 382 



" in Wheatfield t., along south Hank of Dick's hill, 390 



" Iron ore on top of VIII c 2, poor ore, 204 



Group VIII c .?, Hamilton upper shale. 

 " 200' to 300, described, 66,68 



