DIAGRAM ILLUSTRATING OUR COAL RESOURCES, THE AMOUNT THAT HAS BEEN USED 

 AND THE AMOUNT STILL REMAINING UNUSED IN THE UNITED STATES 



A represents the total coal supply of the United States. B represents the amount used 



to the end of 1912. C represents the amount consumed in a single year. This diagram was 



prepared by Edward W. Parker, Chief of the Division of Mineral Resources of the U. S. 

 Geological Survey. 



section, the balance of the licensed land 

 to remain in the government to be leased 

 in small parcels to other parties on a 

 royalty basis under the more advantage- 

 ous terms that could then be secured. 



THE NEED OE OIL EOR THE NAVY 



The United States will need oil for 

 its navy as well as coal, and probably 

 in increasing quantities as the modern 

 oil-burning or gas-burning engines are 

 recognized. It would be economical to 

 substitute oil for coal for many reasons ; 

 to reduce labor cost, to avoid the building 



and maintenance of colliers, and the 

 purchase and support of coaling stations. 



The Diesel engine can, with the fuel 

 carried from the home port, take one of 

 our greatest ships around the world 

 without dependence upon a renewed sup- 

 ply of fuel. England's adventure in this 

 direction will presumably force other 

 nations into like enterprise, and yet Eng- 

 land has no oil fields on which to draw, 

 while we have already the largest pro- 

 ducing fuel-oil fields in the world, and 

 others are appearing. 



Already we know of oil in Alaska, and 



205 



