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GEOLOGICAL SUEVEY OF THE TEEEITORIES. 



are a number of these marvelous central springs ; they usually crown 

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



mm 



mm iiii 



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

 looks down into the wonderfully clear depths, the vision is unique. The 



