Petroleum as fuel, 76 ---- in England, 104 ---- in historical times, 2 Petroleum’s part in the Great War, 123 Petroleum, the production of, 41 ----, the refining of, 51 ----, the world’s output of, 158 Remarkable oil wells in Mexico, 14 Rotary system of drilling, 48 Roumania, petroleum industry of, 28 Roumania’s crude oil production, 160 Russia, petroleum industry of, 18 Russia’s crude oil production, 164 Scottish oil pipe-line, 70 ---- shale-oil industry, 132 “Shell” Company and the Dutch Indies, 33 ---- Transport and Trading Co., the, 150 Sir Marcus Samuel, Bart., and toluol supplies, 130 Solar oil for gas enrichment purposes, 61 Staffordshire, petroleum in, 106 Texas, the oil-fields of, 10 Toluol from Borneo petroleum, 62 Transport of petroleum, 63 Trinidad, progress in, 117 Vicker’s oil engines, 102 THE END _Printed by Sir Isaac Pitman & Sons, Ltd., Bath, England_ [Transcriber's Note: Inconsistent spelling and hyphenation are as in the original.] End of the Project Gutenberg EBook of Petroleum, by Albert Lidgett