424 K . REPORT OF PROGRESS. E. W. CLAYPOLE. 



Tage. 



Group of V a t, (linton iron 83. and black ore. 

 " thickens rapidly in Madison t. along Conococheague mountain : makes 



bold terrace marked with fragments, 2,~>4 



" makes north crest of Blue mountain, Bye t., 311 



" lo' to 20' thick, in thin layers, fragment . 312 



" thin along Tusoarora mountain in Saville t. ; few fragments noticeable 

 in the debris of Run gap; thickens westward and covers the surface 



with slabs, 323 



" very thick in Spring t. ; makes northern crest of Blue mountain ri- 

 valling in height the south crest (IV c); its thin, flat plates spoil the 



red shale slope of the mountain, and encumber the runs. 335 



44 makes one ridge with the ore SS (V a 5) iu Tuscarora t., called Ore 



ridge, 362 



(,'n>Kj> of V a S, Clinton upper shales. 



44 described generally, 48,49 



" in Saville t., along Conococheague anticlinal, shows gray soil, . . . 323 

 Group of V <i 4. Clinton Ore SS. 



" described generally, 49 



" never more than 20' thick, 50 



" makes a tine bold outcrop, Rainbow rocks, &c, 50 



" thin in Chestnut ridge, Madison t., gapped, 247 



« very fossiliferous in Madison t., 254 



" reseml)les IV c in Saville t., 324 



" easily distinguished in Madison t., 324 



" finest exposure in Little Minor's valley, . . 358 



11 conspicuous and often fossiliferous in Buck hills south of German- 

 town, Toboyne t., ... 35S 



Group of V a 5, Danville ore beds. 

 44 a conspicuous plane of division between Clinton V a and Onondaga 



V & 45,46 



•« described, 49,95 



" limestone, 51 



" not seen in Rye t.; no well-marked ridge, but a terrace, . 312 



41 in Greenwood t.: only worked at Millerstown, east side of the river, 217 



" in Saville t., no signs of the ore beds, ... .">2.'> 



" equivalent of Danville fossil ore beds, 828 



" runs through Saville t., but not opened 324 



" not seen in Spring t.. 335 



" indicated, i>ut looks poor in Toboyne t., 358 



i > Sand Vein ore bed the only one worked at Millerstown, 363 



11 Limestone quarried in Little Minor's valley, Toboyne t., . . . .358 



Formation— Niagara, 

 11 wanting to Perry county. It should come in on top of the Sand Vein 



ore bed, but no Niagara fossils have been found, 



Formation Vo. Vb Onondaga shale, 



•• d< - nerally, 51,52 



" Lower limit, the top of the Sand-vein ore-bed, 46 



" underlies most of Jaokson t., 282 



" B01 shown in Enslow's Mill section, 288 



" nanieli sa \ alley bet. chestnut ridu r <' and Bower mtn., in Madison t, 251 

 44 upper part of BisUine's mill section, 255 



