Spring found the young engineers restless for new fields. They longed to tackle other big feats of engineering. Jim Ferrers understood, and said to them:

"You youngsters know, now, that you can trust me to run this mine."

"We always knew that we could trust you," Tom corrected him.

"Well, you know it now, anyway. You want to get back into the world. You are restless for new fields to conquer. Go ahead; only come back once in a while and shake hands with old Jim.

While you"re away I"ll send you a monthly statement of your earnings and see that the money is placed to your credit."

On their ride to Dugout, Tom and Harry were favored with the company of Mr. Dunlop, promoter of the Bright Hope Mine.

"I suppose it"s a lucky thing for you boys that you stuck to your own mine," said Dunlop. "you"ve come out a good deal better.

I wish I had secured your services, though. We"re making some money over at the Bright Hope, but we"d make a lot more with the right engineers in charge. I"m on my way to Dugout to use the telegraph wires in earnest. I"ve learned that the real way to make money out of a mine is to have a real engineer in charge."

Tom and Harry delayed but a couple of hours at Dugout. Then-----

However, their further adventures must be delayed in the narration until they appear between the covers of the next volume in this series. It will be published at once under the t.i.tle, "_The Young Engineers In Mexico; Or, Fighting the Mine Swindlers_."

In this new volume will be described what Tom and Harry did in a land of mystery and romance; a land where the sharp contrasts of wealth and squalor have fostered the development of many n.o.ble characters and have created some of the vilest among men. The forthcoming story is one filled with the glamour and the fascination of that neighbor-country of hot-blooded men. In Mexico, Tom and Harry encountered their most startling adventures of all.