76 G 5 . REPORT OF PROGRESS. I. C. WHITE. 



of coaly material derived from carbonized plants. Its 

 bottom layer is a perfect mass of Bhynchonella contracta, 

 Pterinea, Productella boydii, Spirifera disjuncta and 

 other less numerous shells. — Copperas incrustations of the 

 exposed rock show the presence of iron pyrites, no doubt 

 connected with the plant remains. 



I identify this Cascade sandstone with Mr. Sherwood's 

 Fall Creek conglomerate, because I have traced the New- 

 Milford Lower sandstone, by its current-bedded feature, to 

 its unmistakable outcrop 325' above the Fall Creek con- 

 glomerated its type locality in Bradford county. My Cas- 

 cade section makes the interval 350' * 



My section on Fall's Creek, Bradford county, is as fol- 

 lows : (Fig. 11.) 



1. New Milford lower S. current-bedded ; cliff's, 10' 



2. concealed, 120' 



3. Shales and thin sands, fu 11 of Chemung fossils, 80' 



4. Conglomerate, blackish, quartz, pebbles, 2' 



5. Shales and flags, \ very f ossiferous, J m , 



( one or two spirifer beds, > 

 fi ^ Fall's creek conglomerate, Sherwood, ) ^ 20' 



I Cascade sandstone, White, > 



Base of N 6. 1290' A. T. (barom.), 352' 



The thin Conglomerate 106' above the Cascade sandstone 

 (fig. 10) is curiously represented by a thin conglomerate 120' 

 above the Fall's Creek conglomerate (fig. 11), which helps 

 to confirm my identification. 



The stoppage of Chemung forms at 130' above the Cas- 

 cade sandstone (fig. 10), while they continue to be very 

 abundant as high as 200' above the Fair s Creek conglom- 

 erate, is no argument against the identification ; for I can- 

 not deny Mr. Sherwood's assertion that their upper limit 



*I have also found the FaWs Creek conglomerate outcrop just north of the 

 N. W. corner of Susquehanna county, where it underlies the New Milford 

 Sandstone about 350'. I count on the current-bedding lor identifying the rock 

 on Fall's Creek, because over a wide area of Susquehanna county I could find 

 no current-bedded sands below the New Milford lower sandstone. But there 

 is, moreover, no great difficulty in tracing the rock itself from its Susquehanna 

 county areas through Bradford county to Fall Creek. 



