26 The American Geologist. January, 1895 
northward from Mackinac is about 14 miles. This island was 
nearly three miles long, east and west, and perhaps half that 
width at its widest. It is irregular in outline and has a blunt 
spur projecting towards the north from its east end. Its 
longer axis extends from the east a little to the north of west 
and its highest point appeared to be at the west end. Another 
much smaller island lies about a mile and a half to the north- 
east and on its west and north sides has precipitous cliffs of 
limestone 75 to 100 feet in hight. The third island lies to 
the west-northwest of the middle one and on the east side of 
Pine river. It appeared to rise to about the same hight, but 
it is heavily wooded and was not visited. The middle and 
eastern islands form the water-shed between the nearer shore 
of lake Huron and the sources of the Munuscong river, which 
flows northeast to Mud lake, an expanded portion of the lower 
St. Mary's river. The high western end of the middle island 
is divided between the properties of Mr. Webb on the south 
and Mr. Brown on the north, and both slopes are cleared, al- 
though the summit is still in timber. Both sides are of steep 
drift, that on the north being most gradual, but reaching to a 
lower level. The view from the top is well worth the trip 
Toward the northeast are the picturesque cliffs of the eastern 
ancient island: and beyond in the distance, a bit of the St. 
Mary's river, and above that the high crest of St. Joseph 
island. Toward the north, stretching away from the foot of 
the hill is the wide, flat valley of the Munuscong and the plain 
of the northern peninsula. Seen from this hight, the entire 
sweep of low ground has the appearance of a recently deserted 
lake bottom. The day was clear and we could see quite 
plainly the bights north of Sault Ste. Marie, upwards of 35 
miles to the north. St. Ignace was seen from the south bluff", 
and Mackinac island and the open water of lake Huron were 
screened only by the forest. 
At the foot of the hill on the south the highest beach is 
strongly developed. It is the upper edge of a sandy plain 
sloping gradually away to the southwest. The ridges at this 
point are not very distinct, but there are a few low ones near 
Webb's house and better ones at the Italian settlement about 
three-fourths of a mile south. Measured by aneroid from 
lake Huron at Hessel, about seven miles distant, the altitude 
