50 F 9 . REPORT OF PROGRESS. E. W. CLAYPOLE. 



Sesquioxide of iron, 78.571 



" " manganese, 021 



Alumina, 4.927 



Lime, 510 



Magnesia, 213 



Sulphuric acid, 042 



Phosphoric acid, 1.502 



Water and organic matter, 6.015 



Siliceous matter, 8. 170 



Metallic iron, 55.000 



Phosphorus, 656 



In some places, as in Kennedy's valley, on the land of 

 Mr. Egolf, this ore is very fossiliferous. The sand rock 

 which contains one bed of ore and supports the other is 

 itself a remarkable formation. It extends along the whole 

 outcrop, varying, like the Iron Sandstone, somewhat in 

 thickness, but where thickest, even in the west, not exceed- 

 ing twenty feet. Some of its beds are very hard and flinty, 

 but the upper part, immediately under the ore, is soft and 

 pliable and very fossiliferous. It is one of the most .im- 

 portant contouring rocks in the middle of the western town- 

 ships, rising in several low rolls or arches and being the re- 

 sisting layer in the Chestnut hills and other parallel ranges 

 which have no distinct names. Fine displays of its bent 

 strata may be seen near Beavertown at what are called the 

 "Rainbow rocks," also near Andersonburg and near Bist- 

 line's mill, and in numerous other places. 



Fossil aspect of the Clinton beds. 



Very few fossils have yet been found in the Lower shale, 

 chiefly from the difficulty of finding good exposures. 



The Iron sandstone is also in few places fossiliferous but 

 some specimens have been found which promise to be of 

 considerable interest. There is no question however of the 

 age of these two beds. 



The Upper shale is often abundant in fossils, and their 

 affinity is unmistakable: e. g. Beyrichia lata, Calymene 

 Clintoni, and C. Blumenbachi. The same species occur 

 abundantly in the Sand-rock, and Beyrichia lata, and Caly- 

 mene Clint 'on i continue up into the overlying Sand-vein, 

 where l hey an 1 associated with Ormoccrasvertebratum, Hall. 



We have therefore paheontological evidence, at present 



