MEDFORD-HAMPDBN OSAR. 



123 



extends a considerable distance north of Schotaza Creek. It reaches the 

 Piscataqnis River at the mouth of Schoodic Stream in Medford. The gen- 

 eral course of the Piscataquis is east, but in Medford it bends sharply to 

 the north for more than a mile and then resumes its eastward course. The 

 osar reaches the river just where it makes this last bend eastward and fol- 

 lows the western bank for about 1 mile, and then crosses the river. The 

 river in its eastward course impinges against the base of the osar and is 

 deflected by it nearly one-fourth of a mile northward before cutting through 



Fig. 10.— Usar cut by the Piscataquia Kiyer at Medlurd Ferry. 



it. The ridge is here from 20 to 30 feet high, and is in part covered by the 

 sedimentary sand and clay which constitute the valley alluvium. This 

 place is not far from the upper limit of the sea. Medford Ferry is situated 

 just at the point where the Piscataquis breaks through the osar (see fig. 10). 

 From this point southward the road to Medford Center follows the ridge for 

 a short distance and then passes east of it. The osar extends about one- 

 fourth of a mile west of Medford Center and, still rising above the Piscata- 

 quis River, it penetrates a low pass in Medford and Lagrange. It is here 

 somewhat discontinuous, and in places takes the form of the osar-plain. 



