PLEISTOCENE MARINE SUBMERGENCE . 59 



the marine levels. The map (plate 7) shows the standing water 

 features. 



A good development of bars, with clear relation to the drift sur- 

 faces, gives fairly exact altitudes. One occurrence is a mile 

 northeast of Parishville, where three elegant bars have altitude, 

 928, 905 and 885 feet. At Colton and the Clafin School the strong 

 shore features have not been measured. 



The marine shore is well shown by weak bars and points of 

 deltas northeast of Southville, at 600 to 615 feet, and west of 

 Hannawha Falls by cliff and bar. 



The Franklin Center stage is only suggested; but detached 

 beaches are found at many levels inferior to the summit. 



The delta at Aliens Falls, on the St Regis, appears to have been 

 built during the downdraining of Lake Iroquois. 



Canton quadrangle. The details on the sheet have been studied, 

 mainly by Professor Chadwick, and as he has projected a paper on 

 the Pleistocene geology, the map is not included here. Now it will 

 be sufficient to say that the Iroquois shore merely touches the south- 

 east corner of the sheet; that the marine shore crosses south of 

 Crarys Mills and Langdon Corners, with construction of weak 

 bars on the northwest face of Waterman hill, and a heavy delta on 

 the Grass river at Pyrites. 



Russell quadrangle. ' On this area the Iroquois waters reached 

 far up the Grass River valley, among the Adirondack hills. The 

 plains at Burns Flat and northward, on the east side of the quad- 

 rangle, probably represent the delta of the Grass. 



Wave erosion of Iroquois is well shown on the hills about W^est 

 Pierrepont, and on the hill at Stone School, a mile southwest. Cliffs 

 and bars appear on the northwest and the south faces of Kimball 

 hill, north of Russell. An excellent development of beaches is 

 found on the Hatch (Hamilton) hill, over a mile southwest of 

 Russell. These have been measured with sufficient precision. The 

 summit bar of Iroquois is here 850 feet, and bars range down to 

 815 feet. The vertical range of 35 feet appears to represent the 

 amount of land uplift at this locality during the life of Iroquois. 



The Oswegatchie river crosses the southwest corner of this 

 quadrangle, and its delta is about South Edwards and Pond Settle- 

 ment. The theoretic altitude here is 780 feet for the closing level, 

 and the features range from 826 down to 780 feet, a vertical range 

 of 46 feet. 



The marine shore lies on the northwest corner of the area, north 



