Claypole.] 5dO [Oct. 20, 



a mass of red sandstones, forming what are called the Mansfield Red beds. 

 These beds, with a solid sandstone, continue westward and may be easily 

 traced. The sandstone forms the buttress of the hill, and the ^Mansfield 

 Red beds form a terrace higher up the slope. The direction ot the strike 

 of these beds is about N. E. by E. and S. W. by W. ; but the flattening of 

 the dip curves the outcrop line and throws the basset edge farther and 

 farther from the road. In addition, higher beds continuallj^ pass across 

 the road from south to north as one goes westward, the azimuth of the 

 latter being slightly nearer the meridian than that of the former. 



With the aid of Mr. Lilley, I traced the sandstone for about five hun- 

 dred yards to the west from the mouth of the Gulf brook where the strata 

 are vertical and found it gradually flattening down to a dip of about 45°. 

 Leaving this bed I went across the outcrop of the strata southward, com- 

 ing, of course, on newer and newer beds at every step. At the distance 

 of about three-quarters of a mile from Leroy is a strong exposure of a hard 

 red sandstone in thin beds covered with peculiar fucoidal marks. It 

 forms a low ridge in the valley and crosses the road at a short distance 

 farther on. The strike of this bed agrees with that of the others above 

 mentioned, and the whole district is quite undisturbed by any dislocation. 

 Following it for some distance, I left it and crossing the strike again to 

 the southward, found a bed of green shale quite in the bottom of the val- 

 ley, and immediately upon it a second bed of iron ore, very much like 

 that at Gulf brook. It crops out in the road a little farther west, as men- 

 tioned in the extract from the volume G, given at the head of this note. 



Bej'ond this bed of iron ore, which can be traced north of the road up 

 the hill lie the highest beds of the Chemung group — the Crrammysia ellip- 

 tica bed, the Prodiidella bed, and the Cap-rock — the last a thin shale full ot 

 crushed and unrecognizable fossils. Each bed is separated from the next 

 by a considerable thickness of unfossiliferous shale. 



It is therefore beyond a doubt that these two outcrops of ore mentioned 

 in the extract from G given above, are not parts of the same bed, but be- 

 long to two different beds sepai'ated from one another by an interval of 

 several, perhaps 250, feet. 



If any further proof of this conclusion is desired it may be found near 

 Franklindale. Reference to the map will show that the road forks about 

 a mile west of the village.* The two branches again meet at the distance 

 of half a mile east from the fork. By walking from the latter point along 

 the south road the order of succession, from the Mansfield Red beds up- 

 Avards, may be distinctly seen. In particular, the two seams of iron ore 

 may be readily detected by the red ground and the red road formed by 

 their destruction. 



* The site of the village is wrongly given in the map in Report O. It should be 

 where the four roads meet, about a mile east ot the spot where it is marked. The 

 two roads also should be drawn meeting each other again, as above mentioned. 



