No. XII, 

 220' 



White.] 4^^ [Oct. 20, 



of XII, becomes almost vertical, and give a very complete exposure of the 

 rocks as shown in the following section (No. 12) obtained there : 



1. Flaggy sandstone and concealed .25' 



2. Massive sandstone, top of Homeicood 25' 



3. Concealed 90' 



4. Sandstone, very massive, pebbly 50' 



5. Sandstone, grayish white, somewhat flaggy.. 55' 



6. Green shales 15' 



7. Concealed, with blossom of coal 10' 



8. Green shales and sandstone 130' 



9. Sandstone, somewhat massive 25' 



10. Greenish, flaggy sandstones 135' 



11. Limestone and red shale 25' 



12. Limestone 65' 



13. Limestone, interstratified with red shale 20' 



14. Eed shale 10' 



•15. " Silicious limestone " 35' 



16. Sandstone, massive, Pocono, to level of Cheat 



river, at Great Falls (1055' A. T. Bar) .... 50' 



No. XII is here 220' thick, or nearly 50' greater than at Quarry run in 

 Sec. 2, and it is possible that it should also include the 25' of flaggy sand- 

 stone at the top of the section. 



Small chunks ot coal were seen mingled with other debris in the con- 

 cealed interval. No. 7, and if they belong there, the bed would be in the 

 MaucJi Chunk shale, for No. 6, above, is unquestionably Subcarboniferous. 



The " Silicious limestone" attains a thickness of 35' at this localitj^, and 

 even then it is doubtful, if I have carried it down far enough, since 10'-15' 

 more of the underlying sandstone possesses a very limy aspect in the great 

 cliflf which rises perpendicularly from the river at the Falls. The whole 

 stratum is one solid mass from the top of No. 15 down to river level, the 

 Silicious limestone, as well as the sandstone below exhibiting current bed- 

 ding. 



The " Falls " at this locality is a very rapid descent of the river for sev- 

 eral rods over the massive portion of the Pocono sandstone, the stream 

 descending about 10' in as many rods. 



The following section (13) was obtained about 300 yards above the 

 Falls, in descending a timber chute where the logs in their rapid descent 

 have removed the surface debris from several localities on the west bank 

 of the river : 



1. Upper Freeport Coal, reported 7' 



2. Concealed 200' 



4. Sandstone, massive, top of XII 50' ? No. XII. 



5. Concealed 175' 5 225' 



6. Red shale 10' 



7. Sandstone, flaggy greenish 40' 



8. Sandstone, coarse, buff 3' 



9. Red shale with I. 0. nodules 10' 



10. Sandstone, green, flaggy, visible 50' 



11. Concealed to level of Cheat river 320' 



