THE WORLDS ANNUAL METAL CROP 283 



mankind is bound to reflect this great change in the nature of the ma- 

 terials upon which it impresses its ideals and will. 



On the following sheet is given the statistics of the crop of the 

 principal commercial metals for the year 1906. 



The Metal Ckop of the Wobld dubing 1906 



Tons Value 



Aluminum 20,157 $15,319,320 



Copper 786,794 309,996,839 



Gold 675 406,931,323 



Iron 64,983,481 2,323,799,280 



Lead 1,061,533 120,483,995 



Mercury 3,964 4,233,552 



Nickel 18,983 16,879,684 



Platinum 5.5 3,527,481 



Silver 6,365 123,822,928 



Tin 108,738 86,577,768 



Zinc 774,525 69,428,421 



Total 67,765,220.5 $3,481,000,591 



