The next morning they started northward. Maximina had told them she had relatives in the City of Mexico, and they headed for that place. They reached it, without having any accidents, a week later, and left the girl who had befriended Bob with her friends.
“I wonder if we’ll have any more adventures?” said Ned, as, after a few days’ rest, they started from the City of Mexico toward home.
“Hard to say, but probably you boys will,” said the professor. “Boys are always having adventures. As for me, I am satisfied with those we had on this trip. We had the most excellent success. My name will be famous when the story of the underground city is told in four large volumes which I intend to issue.”
“I would think it might,” commented Ned. “Four books are enough to make any one famous.”
“Well, it will take some long letters to tell our folks of all that has happened to us,” put in Bob. Telegrams had already been sent, so that nobody at home might worry further.
“I’ll be glad enough to get back to the States,” said Jerry. “Mexico is not the best place in the world.”
“I suppose we’ll have more adventures before long,” was Ned’s comment, and he was right. What those adventures were will be told in the next volume of this series, to be called “The Motor Boys Across the Plains; or, The Hermit of Lost Lake.” Here we shall meet all of our young friends again, and also some of their enemies, and learn much concerning a most peculiar mystery.
The weather remained fine, and as the auto had been thoroughly repaired in the City of Mexico before leaving, rapid progress was made in the journey northward. They kept, as far as possible, to the best and most frequented roads, having no desire to meet any more brigands.
“Tell you what,” said Bob, one day, “automobiling is great, isn’t it?”