STATISTICS OF LIVE STOCK. 625 



Livestock in ISOl in counties of North Dakota lying mainh/ within the Red River Valley. 



GEOIiOGIC RESOURCES. 



The gTand agriciiltural capabilities of the soil having been stated, as 

 in the i)recediug pages, there remains little to be added relative to the 

 more strictly geologic resources of the Red River Valley. All its outcrops 

 of building stone, which are magnesian limestone, used also for the manu- 

 facture of lime, are situated in Manitoba. Bricks of the best quality are 

 made from the clayey alluvium which borders the Red River along nearly 

 its entire course after it turns northward at Breckenridge and Wahpeton. 

 These constitute the complete though biief list of the commercially 

 important products of the prairie portion of Lake Agassiz which belong 

 to economic geology. 



Within the wooded portion of this lacustrine area gold occurs and 

 can perhaps be profitably mined in the Archean rocks adjoining the Lake 

 of the Woods and Rainy Lake, which also in some places include granite 

 and gneiss valuable for building purposes. These resources have been 

 described by the Canadian and Minnesota Geological Surveys,^ and need 

 not be further noticed here. 



'Geol. and Nat. Hist. Survey of Canada, Report of Progress, 1882-83-84, pp. 1-22 K (Report on the 

 Gold Mines of the Lake of the Woods, by Eugene Coste); Annual Report, new series, Vol. I, for 1885, 

 pp. 140-151 CC (Notes on Economic Resources of the Lake of the Woods Region, by Andrew C. Law- 

 son). Gcol. and Nat. Hist. Survey of Minnesota, Twenty-third Annual Report, for 1894, pp. 36-105, 

 with map (Preliminary Report on the Rainy Lake Gold Region, by H. V. Wiuchell and U. S. Grant). 



MON XXV- 



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