BLUE EARTH COUNTY, 1884. WARREN UPHAM. 



developed a thickness of 1,300 feet, and extended lower, is found widely in central 

 Minnesota. It is apparently the chief formation in which was done the pre-Creta- 

 ceous excavation of the valleys and gorges of Blue Earth county, where they extend 

 much below the present water level. 



Blue Earth county possesses varied resources and ranks amongst the first in 

 the state. N. H. w. 



