SUPPLEMENTAL. EEPOET — HOCKING VALLE¥, 861 



ville coal. A similar block ore is found on the lands of the Crafts Iron 

 Company at the mouth of Little Monday Creek, and at very nearly the 

 same distance below the Nelson ville coal. It rests upon a flint layer- 

 elsewhere a fossiliferous limestone— with a thin coal beneath. This ore 

 is not thick (from four to six inches), but it is of excellent quality as 

 seen from the following analysis by J. Blodgett Britton, kindly given me 

 by Mr. Crafts : 



Metallic iroE ., , , , ,,^,, 48.13 



Silica , ., 1.53 



Sulphnr .....,.., .- ....... 0.84 



Phosphorus (mean of two trials) ..-. .... .. ., 0.175 



Alnmina , . .... 1,86 



Lime 0.19 



Manganese protoxide 0.37 



The ore above a fossiliferous limestone found in the hill back of the old 

 furnace and thirty feet above the railroad, at Haydenville, doubtless 

 belongs to this horizon as the instrumental measurements give it very 

 nearly the same distance below the Nelsonville seam of coal. This ore 

 was formerly mined, but probably no analysis of it was ever made. In 

 1869, I found a rejected pile of ore at the Five Mile (Union) furnace, 

 which doubtless belonged to the lower series of ores but its stratigraphical 

 place was not ascertained. It Ikad many years before been rejected because 

 of the supposed excess of phosphorus in t^-. A sample of the pile was 

 analyzed by Prof. Wormley and found to contain 42.53 per ©ent. of 

 metallic iron and only a chemical trace of phosphorus. 



An ore mined somewhat at Webb's Summit, on the Straitsville branch 

 railroad, and also said to rest upon a flint layer, has been analyzed by 

 Prof. Wormley for the Thomas Iron Company, and Gen. Thomas has kindly 

 given me the result, as follows : 



Sesqnioxide of irofl ,..,,. ......... 61.02 



Alumina - 8.80 



Silicic acid - -......-,...- 20.76 



Oxide of manganeBe.-.. 1.10 



Lime carbonate .--. — 3.10 



Magnesia ......-.-..,. 1.14 



Sulphnr 0.18 



Phosphoric acid .... .................. ^. ..r 1.31 



Water combined 2.30 



Total ,. - ---.- 99.71 



Metallic iron - 43.71 



The percentage of phosphoric acid is too great for a good ore, 

 Baird Ore. — We now reach the horizon of the Baird ore — so called 

 because it is the ore chiefly ufsed at the Baird Iron Works, in Monday 



