FUEL AND POWER. 29 



those considering the power problem on account of its great content of ash. Not 

 all the seams, however, are of the same character; some coal can be found which is 

 without an extraordinary ash percentage. This is in part a coking coal and might 

 be efficient. The generation of gas from these coals and the use of this gas as a 

 fuel is also a possibility which should be carefully considered. While undoubtedly 

 the material is not high grade, it is worthy of being considered in a region where 

 other sources of power are so costly. 



Crude petroleum, chiefly from southern California, has more recently come into 

 favor as a fuel. 



