368 The American Geologist. -hme, 1894 
this place the beach turns west and passes south of the driv- 
ing park. It is crossed again on the Collinsville road a little 
to the west of the park and tin- Dead River railroad. We 
traced it still farther to a point about five miles northwest of 
Marquette, where it is a distinct beach ridge about a quarter 
of a mile back from the lake shore. It is also well developed 
as a cut terrace around the west, south and east sides of 
Presque Isle Park, about two miles and a half north of the 
city. This picturesque peninsula was once an island more 
than a mile from shore. It is now connected with the main 
land by a sandy neck which was built largely by the waves 
of the Nipissing episode, but probably finished by the pres- 
ent lake. Besides this, the whole tract north of Dead river 
and westward along the shore for three miles or more from 
Presque Isle was tilling in with sand. Some remarkably fine 
beach ridges are to be seen north of the saw mill. At the 
beginning of the Nipissing stage this whole tract was a shore 
of rocky reefs among which the sand afterward gathered. 
From the Pictured Rocks to the point northwest of Marquette 
this line was traced with almost entire continuity, the distance 
being about 4") miles. 
TJAnseto the Vortage Lake Canal. The same beach was 
found again at L'Anse, at the head of Keweenaw bay. Its 
altitude is a little less than 20 feet, measured at the hack of 
the terrace. Along most of this shore it appears as a narrow 
cut terrace, hut at a few points it has been entirely cut away 
by the modern lake. It is very distinctly developed and is a 
marked feature on both sides of the bay. We traced it north- 
ward nearly to Pequaniing point, and it apparently rises 
slightly in that direction. In going by rail from L'Anse to 
Houghton, the railroad follows the terrace of this beach near- 
ly all the way and it may he ^n-vn plainly from the train. It 
is well developed at Baraga and northward to Fewsville and 
Newtonville, and again at Chassel, where the railroad crosses 
the great flats of Sturgeon river. Its altitude at Houghton 
was not carefully measured, but is not far from 25 feet above 
the lake. In going by steamer from Houghton out through 
the Portage lake canal, this beach was seen to extend to the 
north side of the Keweenaw peninsula. In fact, it was the 
shore drift of the lake when it stood at this level which filled 
