256 ANNALS NEW YORK ACADEMY OF SCIENCES 



Feet Inches 



bench. The lower 2 feet, very argillaceous, contains 

 many strings rising from the underlying coal and 

 dividing into branches. This is one of the most per- 

 sistent members of the section 6 feet to 9 



8. Ck)al, containing several thin clay streaks and partings, 



which seem to be persistent along the whole face of 

 the wall. The coal is very regular, having suffered 

 little distortion. The dip is 25 degrees E. N. E 10 



9. Clay and coal, the latter midway and 8 inches thick ; 



the clay is light colored and has thin films of coal . . 1 



10. Coal, with two clay partings apparently persistent and 



varying from 1 to 3 inches ; they carry some iron- 

 stone 



11. Clay, persistent along the whole face 



12. Coal, with four partings, all very thin except when iron- 



stone is present ; balls of iron-stone are common in 

 the coal, which is always distorted around them. . . . 



13. Ironstone, persistent 1 inch to 



14. Coal 



15. Ironstone 



16. Coal with persistent thin clay parting midway 



The beds, Nos. 8 to 16 inclusive, may be taken as a 

 single mass, 28 feet thick. 



17. Coal and clay shale; 4 bands of coal, 4 to 19 inches, 



and 4 of clay, 4 to 10 inches ; all showing great 

 variation in thickness. Thin streaks of coal are in 

 each of the shale bands 5 



18. Clay shale, irregularly bedded, somewhat distorted, has 



a 2 to 8 inch coal layer and several thinner streaks. . 8 



This mass is a notable feature on the opposite wall. 



19. Coal with thin partings 



20. Shale with ironstone 2 inches to 



21. Coal with midway a bony parting of 2 to 8 inches 



22. Clay, persistent, irregular, contains a lens of coal 



23. Coal 



24. Shale, dark, argillaceous 6 inches to 



25. Sandstone, coarse, feldspathic ; hardly coarse enough 



to be conglomerate, as no fragments larger than a 

 pea were seen. The thickness is uncertain as this 

 I'ock, shown only midway in the decouverte, is folded 

 closely ; as exposed in a pit it seems to be not less 

 than 15 



Nos. 23 and 24 fold over the sandstone. 



Ignoring the layers above Xo. 6, the bed, known here as the Paleyrets, 

 is about 70 feet thick ; the coal on this easterly side is very regular in bed- 

 ding and shows few traces of disturbance; in that respect it is greatly in 



