Bob was minded to speak again of the two sharpers he had overheard on the train, but they had reached the pumping station, and he and Betty were immediately interested in what Mr. Gordon had to show them.

There was a long bunk house at one side where the employees slept and ate and where a comfortable, fat Chinese cook was sweeping off the screened porch. The pumping station was another long, one-story building, with eight tall iron stacks rising beside it. Inside, set in a concrete floor, huge dynamos were pumping away, sending oil through miles and miles of pipe lines to points where it would be loaded into cars or ships and sent all over the world. The engineer in charge took them around and explained every piece of machinery, much to the delight of Bob who had a boy’s love for things that went.

From the station they walked to one of the largest storage tanks, a huge reservoir of oil, capable of holding fifty-five thousand barrels when full, Mr. Gordon told them. It was half empty at the time, and three long flights of steps were bare that would be covered when the storage capacity was used.

“If there isn’t a laundry or a hotel in Flame City,” observed Betty suddenly, “there is everything to run the oil business with, that’s certain. Is it all right to say you have very complete equipment, Uncle Dick?”

“Your phrase is correct,” admitted her uncle, smiling. “Poor tools are the height of folly for any business or worker, Betty. As for Flame City, the place is literally swamped. People poured in from the day the first good well came in, and they’ve been arriving in droves ever since. You can’t persuade any of them to take up the business they had before—to run a boarding house, or open a restaurant or a store. No, every blessed one of ’em has set his heart on owning and operating an oil well. It was just so in the California gold drive—the forty-niners wanted a gold mine, and they walked right over those that lay at their feet.”

They took the automobile after inspecting the storage tank and went several miles farther up the field to the gasolene plant that was isolated from the rest of the buildings. Here they saw how the crude petroleum was refined to make gasolene and were told the elaborate precautions observed to keep this highly inflammable produce from catching fire. Seven large steel tanks, built on brick foundations, were used for storage, and there was also a larger oil tank from which the oil to be refined was pumped.

“I’d like to see a ship that carries oil,” remarked Betty, as they came out of the gasolene plant and made their way to the automobile.

One of the men had happened to mention in her hearing that an unusually large shipment of oil had been ordered to be sent to Egypt.

“Well, that’s one request we can’t fill,” acknowledged her uncle regretfully. “You’re inland for sure, Betty, and the good old ocean is many miles from Oklahoma. However, some day I hope you’ll see an oil tanker. The whole story of oil, from production to consumption, is a fascinating one, and not the least wonderful is the part that deals with the marketing side of it. We have salesmen in South America, China, Egypt, and practically every large country. Who knows but Bob will one day be our representative in the Orient?”