348 THE GEOLOGV OF .MINNESOTA. 



1 W;iter-power. Topography. 



places. This has been improved on the Upper Iowa at Le Roy, and on the 

 Cedar at Ramsey, Austin and at several places below Austin, in the con- 

 struction of flouring mills. 



Water-power and water-power mills in Mower county. 



At Lansing on the Cedar is the Lansing mill, owned by Alderson and company; head ten 

 feet; thirty horse-power; one "American turbine"' wheel of forty-two inches; five sets of rollers 

 (Noyes); capacity, seventy-five barrels per day. 



At Ramsey is Matthew Gregson's mill, which has a head of water of nine feet; one forty- 

 two-inch Leffel wheel, with twer.ty-five horse-power; one other wheel for machinery, giving 

 thirty horse-power; three n.n of stone; capacity fifty barrels. 



At Austin is Warner's mill (now owned by C. Alderson), situated on Dobbin's creek, with 

 dixteeu feet head; two Huston wheels (17 and 15 inches); fifteen horse-power, more or less, for 

 each wheel; one pair of millstones; five sets of rollers, of Cosgrove's patent; capacity forty bar- 

 rels. The full capacity of this stream is about twenty-five horse-power. 



At Austin on the Cedar is the Engh roller mill, owned by Job Engle; has eleven feet head; 

 two Huston wheels (45-inch and 27-inch), giving respectively forty and fourteen horse-power; 

 eleven sets of single (Noyes) rollers : capacity 125 ban els. 



Two miles below Austin on the Cedar is Jonathan Gregson's mill, with thirteen feet head ; it 

 has one Leffel wheel of forty-two inches, and one '-American turbine" of forty-two inches, mak- 

 ing together 100 horse power ; eight sets of rollers (Case's patent); two buhrs; capacity 125 bar- 

 rels. This power is not all employed. 



Five miles below Austin is \V. II. Officer's mill; this has eight feetTiead,'one "American 

 turbine" and one Leffel wheel, each being forty-eight inches in diameter; sixty horse-power; two 

 sets of rollers (Noyes). and three run of stone. 



At seven miles below Austin on the Cedar is the old site known as Tiff's mitt, now owned 

 by Alderson and company. This has not been employed for twenty years, and a part of the dam 

 is gone; but there is here available over 100 horse-power. 



There is another available privilege near the mouth of Rose creek, amounting to ten horse- 

 power, not now used. 



At Le Roy, on the Upper Iowa river, is Isaac II. Thompson's mill ; this has ten and a half 

 feet head ; one forty-eight inch Leffel wheel; three run of stone (one for feed); capacity twenty- 

 four barrels. 



Topography. This county is one of high prairie. Its surface is smooth, 

 and gently undulating. The broad valleys of the small streams that appear 

 in the eastern and western portions are basin-shaped in cross-section, though 

 they sink, in the towns of Frankford and Racine, from fifty to seventy-five 

 feet below the general level. The summit of the principal N. W. and S. E. 

 watershed is formed by the Lower Devonian strata. Toward the east from 

 this summit, particularly toward the northeast, the view over the valleys 

 of Deer and Bear creeks, introduces a decided change in the landscape as it 

 first appears before the traveler. The expanse is broad, low, and wooded 

 more or less. A similar change is introduced in the southeast, 'where the 

 Upper Iowa river passes through the township of Le Roy. The western 



