72G ABORIGINAL OPERATIONS IN AN IRON" MINE. 



pity and extending- to unknown depths beneath the present tloor of the 

 mine. Three of these borings are seen in the wall of the ijiine shown 

 in plate vii. One is exposed at the right of the right-hand figure, 

 and a second occurs beyond this, extending from the stump on the 

 margin of the mine down to and beneath the feet of the man whose 

 back is turned toward the observer, and a third passes down from the 

 second stump, being the same opening as that shown at d d in plate v. 



Numerous examples of the implements found and specimens of the 

 ore in its various phases, together with a large mass of the compact 

 ore, one surface of which shows the markings of the mining tools of 

 the aborigines, were presented to the U. S. National Museum by the 

 proprietor of the mine. Dr. S. W. Cox. 



I have now examined mines and quarries of the aborigines in twelve 

 distinct materials, and each new example has added to my former high 

 estimate of the enterprise and perseverance of the native peoples when 

 engaged in the pursuit of their normal industries. 



