428 F". REPORT OF PR0GRES8. E. W. CLAYPOJ 



Page. 



Formation Vo. FIT, Oriskany sandstone. 



*« rough low ridgeS, j)iilpit rocks, Arc, Centre t., 185 



" 20' only, in the ridges of Centre t., 185 



" coiis])icu()iis (or numerous parallel synclinal outcrops along Lime- 

 stone ridge, Dick's hill, and Iron ridge, 184,185 



" usually a hard solid rock in Centre L, 186 



" sometimes crumbly, easily quarried for rough casting sand for build- 

 ings, 186 



44 conglomerate of little, bean shaped, white quartz pebbles, mixed with 



some of larger size in Centre t., 186 



" ridges disappear occasionally where the rock is locally crumbly, 187 



" no ore deposit known in Perry counts , 187 



" supposed ore is only iron-stained sandstone fragments, 187 



" tongues on the map in Centre t., 188 



'• finest exposure in the county, cliffj 189,190 



" very thin near Millerstown, poor outcrop, no pulpit rocks, hardly a 

 fragment to be found ; probably thins to nothing eastward at east 



end of Greenwood t., 218 



•« overlooks Blain, on Sandy hill, Jackson t., 234 



" absent from Liverpool t., probably, 241 



" sand makes the fertility of Centre valley, Madison t., .... 249 



" much folded, zig-zag, much softer in Madison t. than in the center of 



the county, 260 



" soil yellow ; only way to trace VII ; no ridges, 260 



" undulated and compressed in Miller t., 267 



" double ridge where it crosses the Juniata, 267 



" close behind old graveyard, 1st crop, 267 



" ]>asses Clouser's ore works, rough ridge, 2d crop, 268 



" high synclinal ridge, 2 m. W. of Baileysburg, 3d crop, 268 



" makes crest of Inoculate ridge, 268 



" contains much iron ore ; double synclinal, Ac., 268 



" narrow synclinal ridge, past Clouser's, 4th crop, 269 



long N. foot of Dick's hill, Miller t., 5th crop, 269 



" absent in Rye t., east of Sterrett's gap, 309 



" zig-zag in Saville t., 325 



" greatly folded and zig-zaged in Spring t., 338 



" in ridges of Elliotsburg, past Pine Grovechurch, south of Blooms- 

 burg, 888 



" in North Purna Spring t., .... 338 



M along north side of Sandy hollow and north hank of Sherman '8 creek, 



i Palling and Warm springs to knob at Oak Grove furnace, . . 339 



" hard, rough, ferruginous in Spring t., 339 



» furnishes the two springs at Palling spring, 339 



•> Fairly well exposed opposite Millerstown, 364 



«« soaroely noticeable in Tyrone t., 374 



" on Landisburg hill, but not on Bell's hill, 374 



u -jo thick along north line of Watts t., bold ridge; makes dam across 

 Juniata : makes Half Falls. 379 



Formation Villa, Upper Hetderberg. 

 - apparently absent from Perrycounty, 64 



