862 GEOLOGY OF OHIO. 



Creek township. Perry county. The place of this ore is about thirty-five 

 feet below the Nelsonville seam of coal. This brings it below the Lower 

 Lexington coal, or Coal No. 6 of the northern series. In the vicinity of 

 the Baird Furnace this lower <coal is often seen, especially on the ridge 

 between the furnace and Maxville. The ore is here about ten feet below 

 the latter coal and at the bottom of the light colored fire clay. Sometimes 

 there is under the ore a thin layer of fossiliferous limestone, but this is 

 often wanting, and sometimes it is changed into flint. The ore in this 

 region is generally oxydized on the outcrop, but, under deep and im- 

 pervious cover, it retains its original quality of a carbonate. The thick- 

 ness of the layer is from eight to ten inches, but it is often thinner in 

 its outer margin, where the ore is decomposed and crumbling. Before 

 the erection of the Baird Furnace, ores fiom this neighborhood had been 

 taken to the Logan Charcoal Furnace and used with entire success. 



I have seen but a single analysis of the ore, from this region. It was 

 such as was used in the Thomas Furnace, at Gore. It was given me by 

 Gen. Thomas and has already been published by Mr. E. C. Pechin in the 

 Metallurgical Review. 



Calciked Baird Deb. 



Sesquioxide of iron 66.86 



Oxide of manganese 1.10 



Silicic acid 31.64 



Alumina 2.35 



Lime carbonate 1.75 



Magnesia cartonate 1.07 



Phosphoric acid 0.73 



Sulphnr 0.26 



Water combined 4.05 



Total 99.81 



Metallic iron 46.80 



I have no doubt that much of thje Baird ore is better than i-his. North- 

 east of the Baird Furnace on the land of Jacob Martzoff, in Monday Creek 

 township, I found in the road an ore resting on flint which I took to be 

 the continuation of the Baird seam. It is one foot thick and thirty-eight 

 feet below a seam of coal supposed to be the Nelsonville seam, and also 

 below Coal No. 5. It is a very superior ore as shown by the following 

 analysis by Prof. Wormlcy; 



Specific gravity ,. 2.692 



Water combined 7.20 



Silicious matter 13.20 



Iron sesquioxide 75.35 



Alnmina 0.00 



