HOCKING VALLEY. 691 



a higher position, these must be fragments of other layers. Its blossom 

 follows the Ames limestone." 



Ore No. 11 is about fifteen feet above the Ames limestone, and is 

 described by Prof. Weethee as consisting of two massive layers one foot 

 thick each, constituting nearly a solid mass two feet thick, occurring in 

 irregular rough nodules, some of the blocks weighing two hundred 

 pounds each. He describes it as a siderite, yielding from thirty to 

 thirty-four per cent. iron. In section 30, Dover township, on W. John- 

 son's and L. D. Linscott's land; it is a yellow hydrated sesquioxide much 

 like the Fulton ore. At another opening in the same section it is in 

 solid masses of irregular shape, many of them weighing several hundred 

 pounds each, and is a blue calcareous ore, apparently a blue carbonate 

 with lime. 



Ore No. 12 is from thirty-five to forty feet above the Ames limestone, 

 is nodular and similar to No. 9, and in places two and one-half feet thick. 

 It may be seen on the Davis farm, section 30, Dover township, and on 

 the William Mason farm, in Ames township. At one opening in Dover 

 township it is from twenty inches to two feet thick, a yellow hydrated 

 sesquioxide resembling the Pulton ore, and apparently of equal rich- 

 ness. 



Ore No. 13 is also found on the Davis farm, section 30, Dover township, 

 eighty feet above the Ames limestone, and resembles the Fulton ore, but 

 is rather more sandy. 



Ore No. 14 has its horizon from twenty to fifty feet below the Pitts- 

 burgh Coal, and is found in hard, brown nodules scattered through 

 thirty feet of ferruginous clay. No opening has been carried to its bed. 

 Some of it resembles the " Needle ore " or gothite, and from the manner 

 in which it is distributed gives promise of being of good thickness and 

 a very valuable ore. It yields by analysis 65.S6 per cent, metallic iron, 

 0.51 per cent, phosphoric acid, 0.07 per cent, sulphur. The iron is in 

 the form of a sesquioxide, of which the ore contains 79.09 per cent. A 

 remarkably fine ore. 



Careful measurements have been made by Prof. Weethee to determine 

 the relative position and thickness of these ores, and the general accu- 

 racy of his work is confirmed by Mr. Nichols's notices and my observa- 

 tions. While these ores are largely developed and widely distributed, 

 none of them are to be regarded as absolutely persistent. In places, 

 massive sand-rocks and in others, shales occupy the horizons of the ores 

 without any sign of their presence ; and the calcareous ores also some- 

 times pass into limestone, and frequently outcrops of ores are noticed 

 which cannot be referred to any of the foregoing numbers. In section 



