558 REPORT ON NATIONAL MUSEUM, 1886. 



Diabase. Nearly black ; very fine and compact. Used for foundations and rough 

 construction. Near Duluth, Saint Louis County. United States Government Sur- 

 vey. Tenth Census, 1880. 26567. 



Nearly black ; fine and compact. Two Harbor Bay, Lake Superior, Lake 



Comity. Tenth Census, 1880. 26634. 



Gabbro. Coarse; dark gray. Used for house trimmings and general building. Du- 

 luth, Saint Louis County. Tenth Census, 1880. 26443. 



This stone is commercially known as Duluth granite. 



Massive labradorite. Coarse; compact; light greenish. Three miles East of 

 Beaver Bay, Lake County. Tenth Census, 1880. 26571. 



Olivine diabase. Lower Silurian ; nearly black ; fine and compact. Used for foun- 

 dations and rough construction. Taylor's Falls, Chisago County. Tenth Census, 

 1880. 26501. 



Sandstone. Lower Silurian; fine; brown with light spots. Fond du Lac, Saint 

 Louis County. J. G. McDonald's quarry. Tenth Census, 1880. Two specimens. 

 2644(5. 



Lower Silurian ; line; brown with light spots. Fond du Lac, Saint Louis 



County. M. Boyles quarry. Tenth Census. 26447. 



Lower Silurian; fine; very light colored. Hinckley, Pine County. Saint 



Paul and Duluth Railroad. Tenth Census. 26636. 



Lower Silurian'; fine and friable ; light-colored with ferruginous blotches. Jor- 



dan, Scott County. Phillip Kipp's quarry. Tenth Census. 26686. 



Lower Silurian ; fine, friable ; very light bull' with ferruginous blotches. Jor- 



dan, Scott County. Phillip Kipp's quarry. Tenth Census. 26687. 



Lower Silurian; light-colored; fine and friable. Dakota, Winona County. 



Quarry of Brown & Hartley. Tenth Census. 26723. 



Lower Silurian ; gray; fine, and friable. Dresbach, Winona County. Quarry 



of J. F. Fostevi n, j r. 26827. 



Purplish brown ; medium. L,uverne, Rock County. John S. F. Batchen. 



27407. 



Lower Silurian ; fine; yellow. Mendota, Dakota County. Quarry of Steele & 



Mclntyre. Tenth Census. 26772. 

 Quartzite. Potsdam ; maroon ; fine and compact. Courtland, Nicollet County. 



Fritz Mcyerding's quarry. Tenth Census. 26688. 

 Slate. Greenish. 4 by 4 by 1 inches. Near Knife Falls, Carlton County. Saint 



Paul and Duluth Railroad. Tenth Census, 1880. 26488. 



MISSISSIPPI. 



Limestone. Gray ; finely fossiliferous ; compact. Tishomingo County, 1885. 37580. 

 Sandstone. Very light yellow ; fine; cellular. Tishomingo County. 37581. 



Light colored ; soft and friable. Tishomingo County. 37599. 



Light colored ; medium. Foot cube. Stouington, Jefferson County. 37820. 



Sandstone, argillaceous. Fine; yellow. Rankin County. 37598. 



MISSOURI. 



Magnesian limestone [marble]. Red; white spotted. Slab 7 by 5 by 1 inches. 

 Iron County. Centennial, 1876. 27123. 



Dull red; variegated. Sec. 36, T. 33,R.52, Madison County. Cedar Creek 



quarry. Tenth Census, 1880. 26607. 

 Limestone. Sub-Carboniferous ; drab ; line and eompact. Saint Louis^ Quarry of 

 Scuranha & Veith. Tenth Census, 1880. 26701, 



