

24 NEW YORK STATE MUSEUM 



moraine forms, sometimes toward the southern edge tending toward 

 the drumHn form, as if that edge of the moraine had been over- 

 ridden. No doubt some of the smaller present hills are of the 

 nature of dunes as there are localities where the sand is still exposed 

 to the free action of the winds. A considerable part of the city of 

 Gloversville is situated on this moraine, and the more direct road 

 from Gloversville to Broadalbin is about in the center of the 

 moraine and traverses a region which has many of the characteris- 

 tics of a desert. This grade moraine apparently was accumulated 

 between the two lobes already described where the edges touched 

 or approximated each other. As far as can be judged from limited 

 observations and from the appearance of topographic maps, the 

 moraine belt extends from Barkersville northeastward along the 

 base of the mountains to Corinth. Its western extension if any, 

 has not yet been traced. 



Recessional moraines. South of the moraine already described, 

 in the field of the Mohawk glacier, special moraine accumulations 

 are almost absent excepting heavy deposits of till in the Mohawk 

 valley which have been so reshaped as largely to Iqse their char- 

 acter as moraines. In any case they represent dumping and 

 filling in the immediate INIohawk valley and the work of localized 

 tongues. The region south of the river to the limit of the district 

 is distinctly free of anything which could be called morainic. On 

 the eastern edge of the district from the interlobate moraine south- 

 ward to the. Mohawk river a number of small morainic areas were 

 found, generally of till. It is evident that these extend over in some 

 measure into the Saratoga quadrangles eastward, and further study 

 may develop a distinct belt of such moraine. In that case it would 

 appear to mark the recession of the glacier out of the Mohawk valley 

 to limit the western edge of the Hudson valley glacier at that stage 

 of recession. This would be in harmony with Professor Wood- 

 worth's efforts at the determination of the existence of a Hudson 

 valley glacier extending down toward Schenectady and thus pre- 

 venting the accumulation of the sands of Lake Albany over the 

 region northward from Schenectady. Various accumulations that 

 may be called recessional are found in the Sacandaga region, espe- 

 cially in the neighborhood of Osborne's bridge and northward but 

 more esoecially in the Sacandaga valley northward from Northville 

 and northward from Edinburg. Here are two great accumulations 

 of constructional hills of sand arid gravel which may be regarded 

 as the terminal of the Sacandaga glacier at that stage of its recession. 



