MODIFIED DRIFT OF THE LAKE DISTRICT. 



133 



extensively worked for brick-making fifty years ago, appears from de- 

 scription to belong in the same class with the foregoing. 



No deposits of this kind were heard of about the north end of Winni- 

 piseogee lake from the Wiers to Melvin Village. The well of Mr. Stock- 

 bridge, in the eastern part of this village, about 25 feet above the lake, 

 showed 6 feet of till underlaid by 10 feet of clay, followed by 6 feet of 

 water-worn gravel, which contained copious springs. Less than a mile 

 to the south-east a well at J. Tate's showed 8 feet of coarse till and then 

 4 feet of clay, underlaid by coarse, water-worn gravel. Chas. H. Copp's 

 well, 400 feet farther south-east, showed 4 feet of coarse till, underlaid 

 by 23 feet of fine, stratified blue clay, beneath which 

 water came in abundantly from a thin layer of gravel 

 which rested on a ledge. The former is about 30 and 

 the latter about 50 feet above the lake. One mile 

 farther south a similar deposit of clay, about 30 feet 

 above the lake, has been used for brick-making. It 

 lies a short distance east from the school-house near 

 the head of Twenty-mile bay. On the south-west 

 side of Black island, a mile distant from Melvin vil- 

 lage, two or three acres, 10 to 15 feet above the lake, 

 have a thin layer of till, with many large boulders on r^ g 

 the surface, underlaid by clay, stratified and free from 

 pebbles, at least four or five feet in depth. 



At Wolfeborough, the hillside of till south-east 

 from the bridge has an underlying stratum of clay. 

 Wells at the Glendon house, about 25 feet above the 

 lake, show some 6 feet of till, then an equal depth of 

 clay with till beneath. Near the Pavilion, about 50 

 feet above the lake, a well showed 8 feet of coarse 

 till, then 2 feet of ferruginous earth, then 12 feet of 

 clay free from stones, underlaid by the compact stony 

 lower till. About thirty rods south-east from the last 

 a well passed through 8 feet of till, and then through ' ^ s ^ "§ ^ 

 4 feet of clay, which was underlaid by till. About "-' 



the same distance farther south-east a well at J. Hanson's found this layer 

 of clay only one foot thick, occurring 10 feet below the surface. The last 



