40*2 F" import of PROGRESS. K. W. CLATPOLB. 



Page. 

 Bridgeport sandstone very well exposed at Egolf's mill, Tyrone t., 373 



Brown's (S.) house, 85,207 



Brown's run, Toboyne t., 24,349 



" " valley, synclinal, 29 



" " mouth at Mt. Pleasant in Jackson t., 230 



Brown hematite iron ore of Marcellus VIII 6 1, 96 



Brownell'a lime-kiln, VI, 160 



Brunner, (G.,) 73,291 



Brunner (W.) brick-clay, near N. Bloomfield, 90,207,210 



Back hills, near Blain, Toboyne t., 351,355 



Buck's (Middle) Valley ridge, Buffalo t., 147 



B no k wheat valley, Tuscarora t., , 361,365 



Buffalo township geology, 147 



Bulfalo creek; shows E. dip of rock trough, 17,25 



" ' ; sinuous in Oliver t., 278 



" " in Saville t., . . 319 



" ' gap through VITI c. 2, 327 



Buffalo hills, VIII c 2, 15,67 



" " in Centre t., .198 



" " in Miller t., N. slope gentle and cleared ; S. slope scarped, rug- 

 ged, steep, over Bailey's run, 270 



" " in Oliver t., north of Limestone ridge, .277 



Buffalo mill, Madison t.. 254 



» " section, V b, Saville t., 324 



Buffalo mountain described ; all woods, 10,245 



Buffalo mountain cove, 148 



Buffalo (Raccoon) valley, broad in Saville t., 321 



Building sand— See Sand. 



Building stone, ore-sand rock, V a, Waggoner's mill, 231 



Burn (Mr.); Burn's valley, Toboyne t., in IV, . . . 159,353 



Calcareous green shales of V, ... 45 



Canal levels, 20,23 



Carbonate iron ore of VIII b 1, 194 



Carlisle road shows the Perry county fault, 85 



Caroline furnace, Baileysburg, Miller t., 4 



Carrol] township described, 157 



Casta of fossils filled with ochre ; see Fossils, 74 



" " in the Kingsmill sandstone, Wheatfield t., 393 



Catalogue of plants growing in the oounty, Ch. VI, 113 



Catakil] formation; see ix, . 72 



" " assumed base, Delville sandstone, 77 



Cave of Simon Girty the outlaw, 151 



Caverns in VI, in Saville t., 325 



Cedar (Oissna's) run, section V 6, Madison t, 256,257 



Centre township described, 169 



Centre, in Madison t., 5 



Centre mills, in Madison t., '• • -253 



" Tudor's section of VIII 6, 261 



Centre run enters Sherman's or. near C. mills, 268 



Centre section, 262', V6, Madison U, 257,258 



