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for 20 miles is in the Knobstone, its inidcUe course for au equal distance is 

 througli the Mansfield sandstone, and its lower course for 17 miles is in the 

 shales and sandstones of tlie coal measures. Its upper course has not been 

 studied. The middle course from Raccoon village to near Mansfleld is 

 interesting but not abnormal. (Fig. 1.) The valley is about a quarter of 

 a mile wide, expanding at the mouths of trilnitaries and bounded by steej) 

 bluffs 50-80 feet high. The corn-covered bottom lands, enclosed by forested 

 bluffs, and the fre(]uent changes in the cuive of the stream and in the 

 width of the valley comiiine to give tliis jtart a picturesciue cliarm unsur- 



passed in Indiana. It is unfortunate that no artist has yet found it. 

 (Fig. 0.) 



A mile above Manstield the stream enters au east and west valley 

 three-quarters of a mile wide and is joined by Rocky Fork, a large tribu- 

 tary from the south. (Fig. 3A.) The locality presents several i>eculiar 

 features. Tlie wide valley extends a mile east from the mouth of Rocky 

 Fork and ends in a square cul-de-sac, bounded on three sides by higli. 

 smooth bluffs. It is traversed by two insignificant wet weather streams 

 whose tributaries have biult a fan across the end. There is no sign, and 

 apparently no possibility, tliat it ever contained meander curves of the 

 Raccoon. Directly in the course of the Raccoon at its entrance to this 



