120 



GEOLOGICAL SURVEY OF THE TERRITORIES. 



are a number of tliese marvelous central springs ; they usuallj^ crown 

 the summit of a mound, with projecting rims carved with an intricate 





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to Ml ■' 



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iH Will I ' iln 

 in Ml / /ii/.,, 



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delicacy which of itself is a marvel, and as one ascends the mound and 

 looks down into the wouderfully clear de})ths, the vision is unique. The 



