114 The American Geologist. Auf?»st, i897 
the Canadian Pacific railway tlie road crosses a sand}^ rolling 
plain which is apparently an old delta of the Kaministiquia 
river. The top of this plain is 240 to 260 feet above the lake 
and is about at the level of the top of the famous Kekabeka 
falls three or four miles to the west. The eastward or down- 
stream front of this plain is distinctly euspate, having the 
appearance of being cut by long winding gullies. These show 
the composition of the plain to be mostly of sand. A little to 
the north of Stanley on the Duluth and Port Arthur railway 
the blue' clays mentioned by Lawson* appear underlying the 
sand. In one bank they appeared to be distinctly laminated. 
But in several other exposures no distinct horizontal layers 
were detected. South of the river at Stanley the road ascends 
a bluff of gravelly blue clay. At about 180 feet above the lake 
fine wavy blue cla}' was found free of stones and gravel and 
having a humjty, rolling surface. At a point abf)ut two miles 
from Beaver mine the road follows a long shelf on the south 
side of the valley, which at this higbt is at least five or six 
miles wide, widening towards .the northeast. Along the edge 
of this shelf there is in some places a gravel ridge which is 
probably a wave-made beach. Its hight is approximatel}'^ 450 
feet above the lake. At Beaver mine, and on the hill back of 
it, no evidence of submergence at higher levels was seen. 
In the town of Port Arthur the several features described 
by Lawson were easily recognized. To his report on this 
placef I add only such observations and conclusions as are 
new, or at least not mentioned by him. The lower of his ter- 
races, backed b}' a sharp sea-cliff at 61.4 feet, was readily re- 
cognized as the Nipissing beach. Lawson's photographic view;|; 
looks northward on this terrace, with the sea-cliff' on the left. 
The point from which the view was taken was easily found. 
The newness of this terrace as compared with those above it, 
shown by the comparative amount of erosion, where creeks and 
streams cross it, seems not to have been noticed by Prof. Law- 
son on any part of this coast. Evidence of this kind was not 
found quite so conspicuous in Port Arthur as at some other 
places to be described later. But when this quality was once 
*Ibid., pp. 210-211. ' 
tibid., pp. 262-263. 
JPiate IX, Fig. 1, opposite p. 262, 
