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48 would mean more for the world than all gasolene motor development to date.

It would solve the labor problem on the farm; enable the individual farmer to hold broad acres, by quick cultivation and crops quickly stored. The result from such prosperity for the farmer would be great stores of food, steadying prices for the world.

The farm power, the food power, the sea power, the world power, cry out for gasolene and fuel oil. The Pennsylvania and Indiana oil fields are failing. California is exhausting pocket after pocket. The great oil area of the world to-day stretches from Kansas to Tehuantepec. The lightest oil is at both these extreme points. The appearance is that the great central reservoirs are in the Mexican field.

Their conservation is a world-wide necessity. Their protection is the duty of all nations.

Very few people in the world know the geological structure of these oil fields. No one in the world to-day knows it perfectly. Nothing yet uncovered in the United States resembles the underground formation in Mexico. In California you pump from well-defined areas of oil sands