24 J. H, Kloos—Cretaceous Basin in the Sauk Valley. 
through Minnesota. Owing to the heavy deposits of Drift there, 
however, this will be a difficult task, and can only be done by 
careful observations of all that is revealed by deep wells and 
other excavations. Consequently it is important that all the facts, 
brought to light in this way, should be carefully noted and 
published. 
nown in regard to the Cretaceous series of the Upper 
Missouri, it is also exceedingly improbable that even lignite of 
sufficiertt purity, and in proper quantities to be of much practical 
value, will ever be discovered in the region mentioned. 
F 
ery truly yours . B. MEEK. 
Washington City, D. C., 1871. : 
White Bear Lake, in Pope county, near Glenwood, a village 
ichmond, and seventy-five 
miles west of the Mississippi. Here it makes its appearance 
under a cover of drift, which must be at least 200 feet thick 
In the southern part of the State, on the Cottonwood river, 
Professor James Hall has traced the beds of lignite with friable 
the surface. These fragments are now in the possession of Dr. 
Sweenye, President of the Academy of Natural Science at St. 
Paul, and seem to indicate the occurrence of the highest beds of 
the Cretaceous series in Minnesota. 
* Notes upon the Geology of some portions of Minnesota, from St. Paul to the 
western part of the State (Trans. American Phil. Soc., vol. xiii, pp. 329). 
eS ares a st ee ee 
B 
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