28 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



At the cemetery in this valley (fig. I, C) are two eskers of 

 symmetric form, each a few hundred yards in length and trending 

 nearly parallel with the valley axis. East of the valley, and 

 about I 1 /* miles north of the cemetery, is a broad, flat-topped 

 ridge of till with rock exposed at the ends, forming a barrier 

 which doubtless existed in preglacial time. West of the valley is 

 a hill with rock foundation rounded out on the northeast side 'by 

 a mass of drift. The preglacial course of Rocky River was 

 between the outcrops at these two localities. 



Northwest of the cemetery for one and a half miles the un- 

 even surface is formed of till and small patches of stratified drift. 

 In a swamp near the north end of the cemetery is a curved esker 

 with lobes extending south and southwest. One mile north of 

 this swamp is an area of excessively coarse till containing 

 boulders which range in diameter from 6 to 10 feet and forming a 

 low ridge separating two ravines, in which head streams flowing 

 in opposite directions. The area of coarse till is bounded on the 

 north by a long sinuous esker of coarse gravel terminating in a 

 flat fan, which is superposed on a field of fine till. Associated 

 with the esker is an interesting group of kames and kettleholes, 

 the largest kettlehole being distinguished by distinct plant zones 

 banding the sides of the depression. 



North of the area of boulders, eskers, and kames just de- 

 scribed lies a swamp whose surface is 30 to 40 feet below the 

 upper level of the kame gravels. Soundings made by T. T. 

 Giffen revealed the presence of 36 feet of peat and 2 feet of silt 

 overlying firm sand, so that 70 feet is the minimum estimate for 

 the difference in level between the surface of the gravels and the 

 floor of the swamp. 



Below the rocky cliffs which line the valley sides are boulders 

 brought by the ice from near-by ledges, and about one-half mile 

 above the head of the swamp are remnants of a terrace standing 

 20 to 30 feet above the level of the stream. Although the terrace 

 appears to consist of till, it may conceal a rock floor which was 

 cut by a former stream. As the valley is followed toward Never- 

 sink Pond, the various features of a till-coated, rock-floored 

 valley are seen. 



