Fuels of the Future

Editor's Note: The accompanying article is the last of a series of four, adapted by permission from papers presented at a recent Standard Oil Company (N. J.) seminar on Fuels of the Future. Each paper deals with different phases of fuels for engines of types now in use, under development, or projected. Together they summarize the general subject and furnish a glimpse of the fuels and engines which technology will be offering to transportation in the years to come.