32 NEW YORK STATE MUSEUM 



the northwest corner. A second higher interval without definite 

 traces appears between 620 and 720 feet at the upper of which 

 elevations a beachlike ridge of cobblestones terminating south- 

 ward in a recurved spit or hook is found at the head of Kellas 

 brook. Southward from this point isolated traces appear at 

 mainly higher levels up to 750 feet south of the English river 

 which are tentatively regarded as the work of waves rather than 

 of running water. About half a mile west of the Mooers quad- 

 rangle, where the road south of the boundary line turns north- 

 ward toward Covey Hill postomce, at an elevation by the aneroid 

 of about 820 feet, there is a repetition of the cobblestone deposits 

 at the 720 foot level. These upper deposits at 620, 720 and 820 

 feet along the international boundary are not certainly beaches; 

 they may be the products of streams of water coursing along the 

 ice margin where it met the confronting slope of the land at these 

 respective levels. The association with the spillways suggests this 

 relation. Nevertheless if they are not true water levels they 

 appear to fall in certain planes of tilted water levels shown 

 farther south. 



In the southern part of the area in the latitude of West Chazy 

 beach phenomena are nearly continuous from about 675 feet 

 down to the eastern limit of the area. Beginning at the top, the 

 most conspicuous example is found at the locality which I have 

 named Cobblestone hill. 



Cobblestone hill beaches. The highest distinct wave marks in 

 the southern half of the Mooers quadrangle lie, as nearly as I 

 have been able to determine by the aneroid and a comparison of 

 the contoured map with the ground, between the 640 foot 

 line on the extreme south and the 680 foot contour line near 

 Altona. This line of wave action can be traced with some breaks 

 from a point on the northern margin of the Flat Rocks 1 mile 

 southeast of Altona along the margin of the Flat rock area to 

 the series of beaches which form the eastern face of the high 

 morainal wall stretching oil' to the south from Pine ridge and 

 terminating at the Little Chazy river. South of the Little Chazy, 

 the beach ridge reappears on an elongated hill at an elevation 

 according to the local contour, of 675 feet, and reappears farther 

 south between the upper branches of Ferrel brook at about the 



