OUR PETROLEUM SUPPLY MISER 317 



the present cost of producing gasoline from petroleum in the United States. 

 These costs will be reduced by further research, but no other liquid motor 

 fuel, whether it be from coal, oil shale, or vegetable matter, can hope to be 

 as cheap as our present petroleum fuels. 



The following significant statement on this subject is contained in 

 a recent press memorandum of the Department of the Interior rela- 

 tive to the work of the Bureau of Mines (October 24, 1938) : 



By the time that depletion of our petroleum resources reaches the point 

 when a motorized Nation must begin to look to other sources for some of its 

 fuel, it is hoped that motor fuel can be supplied from coal so efficiently and 

 cheaply that the transfer can be made from the old fuel to the new without 

 drastic adjustments. 



LITERATURE CITED 



1. Bass, N. W. 



1934. Origin of Bartlesville shoestring sands, Greenwood and Butler 

 Counties, Kansas. Bull. Amer. Assoc. Petrol. Geol., vol. 18, No. 

 10, pp. 1313-1345. 



1936. Origin of the shoestring sands of Greenwood and Butler Counties, 



Kansas. State Geol. Surv. Kansas Bull. 23. 



2. Bass, N. W., LEATHBitocK, Constance, Dillaed, W. Reese, and Kennedy, 



Luther E. 



1937. Origin and distribution of Bartlesville and Burbauk shoestring oil 



sands in parts of Oklahoma and Kansas. Bull. Amer. Assoc. 

 Petrol, Geol. vol. 21, No. 1, pp. 30-66, January. 



3. Cadman of Su.vebdale, The Rt. Hon. Lord 



1938. Foreword, The science of petroleum, I. Oxford Univ, Press. 



4. Darton, N. H., Stephenson, L. W., and Gardner, Julia 



1937. Geologic map of Texas. U. S. Geol. Surv. 



5. Fettke, Charles R. 



1938. Oriskany as a source of gas and oil in Pennsylvania and adjacent 



areas. Bull. Amer. Assoc. Petrol. Geol., vol., 22, No. 3, pp. 

 241-266, March. 



6. FlELDNER, ArNO C. 



1937. Fuels of today and tomorrow. Proc. Amer. Soc. Test. Materials, 

 vol. 37, No. 1. 



7. Hamilton, S. H. 



1937. Oriskany explorations in Pennsylvania and New York. Bull. Amer. 

 Assoc. Petrol. Geol., vol. 21, No. 12, pp. 1582-1591, December. 



8. Levobsen, a. I. 



1933. Studies in paleogeology. Bull. Amer. Assoc. Petrol. Geol., vol. 17, 

 No. 9, pp. 1107-1132, September. 



9. McCLEaiLAN, Hugh W. 



1930. Subsurface distribution of pre-Mississippian rocks of Kansas and 



Oklahoma. Bull. Amer. Assoc. Petrol. Geol., vol. 14, No. 12, pp. 

 1535-1556, December. 



10. McQueen, H. S. 



1931. Insoluble residues as a guide in stratigraphic studies. Missouri 



Bur. Geol. Mines 56th Bienn. Rep., Appendix 1. 



11. Miser, H. D. 



1926. Geologic map of Oklahoma. U. S. Geol. Surv. 



