GOLD AND SILVER DEPOSITS IN NORTH AND SOUTH 



AMERICA.! 



By "Waldemak Lindgken, Boston, Massachusetts. 



I. INTRODUCTION. 



At the time of the discovery of America the Old World had a 

 scant supply of the precious metals. Both the northern and the 

 southern iDarts of the new continent proved wonderfully rich in gold 



Fig 1. 



and silver, and its treasures were eagerly looted ; though the looting 

 has lasted four centuries, the mines of its mountain chains are far 

 Even the later discoveries in Australasia and 



from being exhausted. 



1 Read at the Second Pan-American Scientific Congress, Washington, District of Colum- 

 bia. Jan. 3, 1916, and at the Arizona meeting, September, 1916, of the American Insti- 

 tute of Mining Engineers. Reprinted by permission from transactions of the Institute, 

 Vol. 55, pp. 883-909 (1917). 



147 



