Observations on the Recent Glacial Drift of the Alps. 265 



panied by correspondingly irregular depressions, some of whicli 

 are filled with water and form miniature lakelets. The irregular 

 outline and little islands of one of these made it almost a Lilli- 

 putian Minnetonka. Bowlders are abundant in all positions on 

 and in the ridge, as shown by the sections exposed by the out- 

 flowing streams, which also exhibit the confused unstratified 

 condition of the interior. Locally, there are small patches of 

 stratified material. This ridge is most abrupt on the outside, or 

 that away from the glacier, while on the inside it graduates, with- 

 out any distinct line of definition, into the bowlder sheet above 

 described. 



This ridge presents a striking similitude to our Wisconsin Ket- 

 tle moraine, and I think it may be safely said to be a miniature 

 representative of the same phenomena. 



This is a true terminal moraine, according to our definition, 

 formed by an advance of the Ehone glacier. 



7. A few rods — perhaps 20 — below this there is another mo- 

 raine of like character, but of older date, as shown by the grass 

 and shrubs that have grown upon it, as well as by its position and 

 less angular contour. It is narrower and more simple in form than 

 the preceding, and like it, is interrupted by level passes, the chan- 

 nels of former streams. 



About 30 rods below this is a third, still less continuous, a good 

 illustration of an interrupted, half destroyed moraine. 



8. Between these three moraines are level gravel flats of fluvi- 

 atile origin, and doubtless stratified. 



9. On the south side of the Rhone, the middle moraine breaks 

 up into an area of scattered mounds or " knobby drift." 



10. On that side also, at the foot of the acclivity, where the 

 solar action is less effective than elsewhere, a considerable mass of 

 ice has been left by the retreating glacier, and this is much cov- 

 ered by sand, gravel and coarse detrital matter. As the ice melts, 

 it deposits its burden of rock-rubbish in an irregular, hummocky 

 fashion, somewhat resembling that of the moraine above de- 

 scribed, but without the ridgey characteristics of the latter. It is 

 mainly interesting as illustrating the form of deposition of a su- 

 perficial glacial accumulation where the ice lets it down by melt- 



