232 THE GEOLOGY OF MINNESOTA. 



[Quarriej. 



Snure. There is another on section 29, Union, owned by Michael Wilhelm. 

 L. Svenson's is on section 2, Houston. 



The principal quarries at Hokah, now worked, are those of Nath. 

 Whitman, in the St. Croix sandstone, and Widow Prindle. The stone of 

 Mr. Whitman's quarry is a harsh, argillaceous sandrock, in layers a few 

 inches thick, which becomes firmer on exposure. The best building stone 

 lies higher up in the bluffs, and was opened in Mt. Tom by the Southern 

 Minnesota railroad company for the construction of their shops. It is from 

 the St. Lawrence. 



At La Crescent the public school house was built of stone from Potter 

 & Taylor's quarry, likewise in the St. Lawrence, north of La Crescent, in 

 the edge of Winona county. 



Lang's brewery, section 28, Hokah, is a large stone building near the 

 river, built of limestone from near the top of the bluff. 



There is also a fine stone farm-house owned by Wm. Splitter, on section 

 21, La Crescent, in Root river valley. The Nunnery, section 28, La Crescent, 

 was constructed of stone got from the bluffs near, including also that used 

 for quicklime. These are all from the St. Lawrence. 



On Winnebago creek (sec. 22 Winnebago), Mr. B. T. Barbour has a stone 

 flouring mill. 



0. T. West has a limestone quarry at Brownsville, which supplied heavy 

 stone for the railroad, and for other uses. Mr. Job Brown's, at the same 

 place, furnished the limestone foundation for the public school-house. 



The foregoing are a few of the stone buildings in the county, but there 

 are several others which, though noticed in the progress of the survey, were 

 not carefully located, and cannot be referred to. The St. Lawrence supplies 

 by far the greater portion of the building-stone used in the county. There 

 is not a single known workable quarry in the Shakopee, though exposed as 

 favorably as the St. Lawrence. It is uniformly ignored. It is harder to 

 work, has cherty lumps and siliceous concretions which not only disturb 

 the bedding but render it difficult to cut into desired shapes, and is gener- 

 ally in thinner layers. The color is much the same as that of the St. Law- 

 rence, being buff, or slightly salmon-colored, but the St. Lawrence is, where 

 most used for building, also somewhat open or vesicular in texture. Thus 

 mortar sets firmly upon it, and forms a sutured attachment. When the 



