ANCIENT WATER LEVELS OF CHAMPLAIN-HUDSON VALLEYS 159 



playing the draft of the ice in these localities into the Lake 

 George passage. All the striae from Bulwagga mountain south- 

 ward exhibit this southwesterly trend at a considerable angle 

 with the axis of the main valley showing that the axis of the 

 glacial line of flowage lay to the east of the present shore of Lake 

 Champlain ; but nowhere have I seen in this southern area within 

 800 feet above the lake such anomalous variations from the 

 southward and southwestward striation as those which occur in 

 the Port Henry area. 



The other cases of glacial striation which fail to agree with 

 that which is normal for the region are found in the meridional, 

 scores which occur in Clinton county, N. Y., in the town of 

 Mooers and farther west between Cannon Corners and Clinton 

 Mills. 



A ledge of Potsdiam sandstone at the sharp bend in the Great 

 Chazy river between Thorn's village and Mooers Forks carries 

 separated and rather faint striae running n. 19° w. The adjacent 

 bank of the river is for the first 10 feet above the water composed 

 of sandy till, largely Potsdam drift, which must originally have 

 covered the rock here referred to. The neighboring normal stria- 

 tion is shown in a near-by ledge farther down stream to be 

 n. 36° e. 



A ledge on the Perry's Mills. road 2 miles west of that village 

 exhibits faint striae n. 16° w. Striae running n. 10° e. occur in 

 the ditch on the south side of the Rutland Railroad, 1^ miles west 

 by south from the bridge over the Great Chazy. Both of these 

 cases depart from the maximum flowage direction which would 

 be expected for the northeast corner of the Mooers quadrangle 

 from what is known of the more abundant striation immediately 

 southAvest [see geologic map of the Mooers quadrangle, pi. 29] . 



A little less than 3 miles north from Ellenburg depot and at a 

 point J mile south of the English river on the road to Cannon Cor- 

 ners, bare ledges of Potsdam in the road show abundant rather 

 widely spaced striae whose direction is n. 10° w. The normal 

 direction for this region according to observations on the north- 

 western corner of the Mooers quadrangle would lie between 

 n. 46° e. and n. 61° e. The divergence between the normal 



