Geology of Lake Superior. 25 
sand, inclosing a small lake or rather pond. The sandstone 
was not so distinctly stratified as usual. It also appeared 
sometimes ina state of disintegration and passing into the red 
clay. ‘The same appearances were observed in the neighbour- 
ing bay of Chequamegon, and in the vicinity of Montreal 
River. This red sandy clay certainly resembles very much the 
red marle of the new red sandstone formation ; but yet we ad- 
here to our former opinion that it is the oldred, from its ly_ 
ing immediately upon the granite, being conformably strati- 
fied with slate which appears connected with the greywacke 
and supporting very old limestone. 
22. The great promontory of Keewawonan has only been 
examined, and that slightly, by ourselves. Mr. Schoolcraft 
passed over the Isthmus of this Peninsula, and did not, there 
fore, circumnavigate it. 
It has been erroneously stated to bea district of amygdaloid ; 
but the gentleman who wrote thus did not visit it, and wag 
therefore obliged to take the report of others, ‘The central 
parts of this great peninsula are very high, consisting of steep 
and conical hills, which from the distance that we could see 
them at, from a vessel in the Lake, we consider to be at least 
800, and probably 1000 feet above the lake. Being familia® 
with the appearance of granite hills, we have no doubt that 
these are of that rock. All along the south east side of the 
Peninsula, points of sandstone cliffs and sandy beaches bet_ 
ween, continue until within about 7 miles of its north east 
extremity. Here a large bay runs into the foot of the hills, 
and the sandstone ceases, the shore being then of the oider 
rocks. The weather did not permit us to land, but we think, 
that porphyry, greenstone, and amygdaloid will be found here, 
from the nature of the fragments which compose the beaches, 
as well as from the appearance of these rocks. ‘The extreme 
end of Point Keewawonan is of trap greenstone, off which lies 
an island, which we have named Manitou Island, because 
it is much dreaded by the Indians, who believe that it is the 
D habitation 
