Nipissiny Beach on the JST. Superior Shore. — Taylor. 305 
remarkably even extension of the Nipissiug plane to other re- 
gions had not been worked out, and some of the phenomena 
observed had not been correctly interpreted, so that in the pa- 
per on the second lake Algonquin* it was necessary to make 
a few amendments to opinions expressed in the first paper. 
Although it was desirable in the Algonquin article to bring 
ovit the full force of the facts bearing on the extent of the 
Nipissing beach, it was not possible to do so without adding 
considerably to a paper already too long. There were no pos- 
sible outlets for lake Algonquin northward from lake Supe- 
rior, and the only result of the omission therefore was to leave 
the attitude of the plane in that direction unsettled. 
In the paper on the beaches of lake Superior the probable 
identity of the Nipissing beach as far as Pie island near Port 
Arthur was mentioned. But at that time I was unable to 
recognize it at any point farther north or east. Later, how- 
ever, when the true character of the Nipissing beach was rec- 
ognized and its remarkable uniformity over the whole area 
of observation was perceived, the probability of its extension 
in the same position to other regions was obvious. It is the 
object of this paper to show how such an extension is related 
to the shore lines which have been observed on the north coast 
of lake Superior. 
For the substance of this paper I rely entirely upon the ad- 
mirable series of observations recorded by Prof. A. C. Lawson 
in his report entitled "Sketch of the Coastal Topography of 
the North Side of Lake Superior with Special Reference to 
the Abandoned Strands of Lake Warren." f Professor Lawson 
describes strands at forty-eight localities between Duluth and 
Sault Ste. Marie. I propose to take these up in order and 
point out those which seem to agree with the peculiar strength 
and character of the Nipissing beach and which lie in or near 
the place of the plane of that beach projected from other and 
better known parts. In this connection it should be remem- 
bered that the Nipissing beach is remarkable for the strength 
of its development. Its drift has sulfered extreme reduction 
by wave action. It generally contains more sand than other 
beaches and where it is not sandy its pebbles are thoroughly 
*Am. Geologist, vol. xv, Feb. and March, 185)5. 
f Twentieth Annual Rept., (ieol. and Nat. Hist. Survey of Minn. 
