284 



Table of the Height of Lake Superior, with the intermediate Lakes 

 above, and their distances from Tide- Water. 



Route. . Miles. ^ Feet. 



St. Lawrence River, up to tide-water — . . 450 . . . — . . — 



Level, Lake Ontario ...200.. G50... — .. 232 



« Lake Erie 175.. 825. ..333.. 565 



" Lake Huron, 340. .1,165. . . 13.. 578 



" Lake Michigan, — .. — ... — .. 578 



" Lake Superior, 240. .1,405. . . 18.. 596 . 



West end of Lake Superior, 490.-1,895...— .. — 



Table of the Mean Length, Breadth, Depth, Area and Elevation of 



the Lakes. 



Mean Length, Mean Breadth, Mean Depth, Elevation, Area in square 

 miles. miles. feet. feet. miles. 



Lake Superior,.. 400 80 900 596 32,000 



GreenBay, 100 20 500 578 2,000 



Lake Michigan, .320 70 1,000 578 22,400 



Lake Huron, ...240 80 1,000 578... 20,400 



Lake St. Clair,.. 20 18 20 570 360 



Lake Erie, 240 40 84 565 9,600 



Lake Ontario, ..180 35 500 232 6,300 



R St. Lawrence, — — 20 — 940 



Total, 94,000 



Economically, the surface of the State may be divided into four 

 distinct portions. I. The borders. IL The lower half of the southern 

 Peninsula, extending a little north of Grand River, and including an 

 area of nearly ten millions of square acres. IH. The upper half of 

 the same. IV. The mineral country in the north. 



I. Nearly the whole of the southern Peninsula is surrounded by a 

 low level belt, consisting of lands more or less marshy and heavily tim- 

 bered, the soil being a rich clay loam, interspersed here and there with 

 ridges of sand. This belt varies in depth from five to forty miles along 

 the borders of the lakes, and gives evidence of its having been sub- 

 merged at a comparatively recent period. When it is cleared of its 

 timber it becomes dryer, and bears not only heavy crops of grain, es. 

 pecially if drained, but remarkably luxuriant grass and clover. The 

 natural growth is chiefly blue grass (Poa Oompressa) ; June grassi 



