“No good?”

“No; I’d rather catch a pink and blue striped sand flea, which is the rarest kind that exists, than have all the money in the world. If I can get one of them or even a purple muskrat, and find the buried city, that will be all I want on this earth.”

“I certainly hope we find the buried city,” spoke up Ned, who was listening to the conversation, “but I wouldn’t care much for a purple muskrat.”

“Well, every one to his taste,” said the professor. “We may find both.”

The journey, which was to prove a long one, full of surprises and dangers, was now fairly begun. The auto hummed along the road, making fast time.

That night the adventurers spent in a little town in New Mexico. Their arrival created no little excitement, as it was the first time an auto had been in that section. Such a crowd of miners and cowboys surrounded the machine that Jerry, who was steering, had to shut off the power in a hurry to avoid running one man down.

“I thought maybe ye could jump th’ critter over me jest like they do circus hosses,” explained the one who had nearly been hit by the car. Jerry laughingly disclaimed any such powers of the machine.

Two days later found them in Texas, and, recalling Nestor’s directions about crossing the Rio Grande, they kept on down the banks of that mighty river until they passed the junction where the Conchas flows in.

So far the trip had been without accident. The machine ran well and there was no trouble with the mechanism or the tires. Just at dusk, one night, they came to a small settlement on the Rio Grande. They rode through the town until they came to a sort of house-boat on the edge of the stream. A sign over the entrance bore the words:

Ferry Here.