EEADFIELD BRUNSWICK SYSTEM. 195 



GRAVELS NEAR SABATIS POND. 



About IJ miles northwest of Sabatisville and a short distance west of 

 Sabatis Pond is a ridge of gravel, cobbles, and bowlderets, having an 

 arched cross-section. It is hardly an eighth of a mile in length, and 

 appears to have no connections except a deposit on a hillock a few rods to 

 the south. The gravel cap on this hillock is only 50 feet in diameter. 

 Excavations near the road show that 4 to 6 feet of gravel covers the top of 

 a hillock of till. The gravel is distinct!)'' but not very much polished and 

 rounded. 



The plain at the southeast corner of Sabatis Lake has already been 

 referred to. The main part of this plain was deposited by the glacial 

 river which flowed from the direction of East Wales and Monmouth, but a 

 sj)ur extends for one-eighth of a mile or more northwest along the lake 

 toward Leeds. The Maine Central Railroad cuts through this ridge, but I 

 could find no recent excavations showing- the lines of stratification. There 

 is therefore no direct evidence as to the direction of the glacial stream 

 which deposited it, except the fact that the material is coarser on the north 

 than farther south. This negatives the theory that it was thrown out 

 westward around the southern base of Sabatis Mountain by the eastern 

 glacial river (that from Monmouth and Wales). The proof is reasonably 

 strong that it was deposited by a stream from the northwest, i. e., the 

 direction of Leeds. About a mile southwest of this point a small terminal 

 moraine is found in the southei'n part of the village of Sabatisville. The 

 moraine is but little water washed and its base is overlain by the marine 

 clay. It was probably formed at the foot of the ice where it confronted 

 the sea. All the facts agree in proving the presence of the sea as far north 

 as the foot of Sabatis Pond. 



MOUNT VERNON ESKER. 



This is a small hillside system less than one-fourth of a mile in length. 

 It is found a short distance east of Mount Vernon Village. It begins near 

 the southern brow of a rather flattish-topped hill, and at the base of the hill 

 it ends in a small enlargement appearing to be a diminutive delta-plain, 

 which incloses a depression (kettlehole!) occupied by a small peat swamp. 

 It is a small deposit, but a fair type of the sidehill eskers. 



