Geoloyi/ of Maffawa (duI Olfau-a Valleiis. — TuiiJor. 115 
tliis terrace is a beach although it so strongl}'' resembles one. 
Above its level there is the same billowy surface of sand and 
close to the road at about 1,'210 feet there is a small steep-sided 
kettle about 15 feet deep. The sand as seen on this road ap^ 
peared to be gathered more densely along three east-west belts^ 
one low down, say 650 to 700 feet, another at 900 to 1,000 
along the north side of Green lake and apparently holding 
it up, and a third at the top of the hill, 1,100 to 1,200 feet. The 
middle one shows bowldery knobs that seem to mark it as a 
terminal moraine. About two miles southeast of Green l.-^ke 
is Windigo lake, said to be larger and at about the same alti- 
tude, and Windigo hill as high or higher than Stony hill. 
Their basins are probably of impervious drift or rock under- 
lying the sand. 
The area of the sand is said to have very detinite limits on 
the east and west extending about two miles each way from 
the road. Southward it thins out, but is said t<^ extend several 
miles beyond Stony hill. 
Nearly opposite Deux Rivieres the deep narrow valley of 
the Maganasippi river opens through the high plateau of 
Quebec, and it seems probable that the glacial drainage that 
fovmed the kame deposit was in some way related to that val- 
ley. The relation here is much like that described b}^ Prof. 
Fairchild between the large kame areas of western New York 
and the deep valleys which indent the south shore of lake 
Ontario.* 
Somewhat similar sand formations, but not so extensive 
nor, so far as seen, reaching to so high a level, were found at 
Bissett 12 miles and at Mackey 25 miles farther east. The 
knob-and-basin structure is not quite so prominent at either 
of these places, but at both there is a great rolling sand de- 
posit overlying the ground moraine. At Bissett it was follow- 
ed up to an altitude of about 800 feet above tide and at 
Mackey up to about 600 feet. At McKinnie's farm on the 
hill south of Mackey the highest point reached was nearly 
800 feet, but above 600 feet the surface is of stony, gravelly 
clay. No trace of shore lines or sedimentation was seen on 
the upper slopes. At neither of these places, however, were 
* " Kame Areas in Western Now York eouth of Irondequoit and 
Sodus Bays," by H. L. Fairchild, Jour, of Geo), vol. iv, No. 2, 1896. 
