44 



NEW YORK STATE MUSEUM 



Poentic kill, i8, 20, 41 



Rexford Flats, 10, 31 



Rock surfaces, topography due to, 



5-8 



Rock topography, modifications pro- 

 duced during the Pleistocene 

 period, 9-13 



Round lake, 8, 18, 24 



Round lake depressions, 7-8, 29, S3 



Round lake region, 21-23, 4i 



Sand plain region, 17 



Sand-lime bricks, sands for making, 



25 



Sands, Lake Albany deposits, 16, 19, 

 42; molding sands, 24; for mak- 

 ing sand-lime bricks, 25; for mak- 

 ing cement blocks, 25; Alplaus 

 lake deposits, 26; Mohawk flood 

 deposits, 34; wind-blown, 37-38 



Saratoga lake, 8 



Schenectady, 6; Lake Albany de- 

 posits, 19-21 



Scotia, 34, 35 



South Schenectady, 24 

 Stream alluviums, 37 

 Surface deposits, 14-23 



Till, unmodified, 14-18; relation of 

 Lake Albany deposits to, 18-19; 

 modified, 28-36; mingled with 

 marginal lake , deposits, 28-29; 

 washed and eroded by currents of 

 water, 29-33 



Timeson, 7 



Topography due to rock surfaces, 

 5-8 



Town House Corners, 9, 10 



Unmodified till, 14-18 

 Usher, 8, 24 



Vischer Ferry, 6, 8, 12, 17, 31, 37, 

 39, 42 



Watervliet Center, 19 

 Wind-blown sands, 37, 38 

 Woodworth, cited, 7, 8, 16, 17, 18, 

 19, 31 



