With a courtly flourish Don Luis wheeled about to face young Hazelton.
But the sound of deep breathing was all that came from Harry.
Fatigued by the long, rough automobile ride, that young engineer
had dropped fast asleep in the broad porch rocker.

"Your friend is much fatigued," spoke Don Luis, with fine consideration. "If you deem it best, Senor Tomaso, we will arouse him and he shall go to his room for an hour's sleep before the evening meal."

"If his sleeping in the chair doesn't annoy you, Don Luis, my friend will wake up, refreshed, in twenty minutes or so."

"So be it, then. Let him sleep where he is. But you, Senor Tomaso, would you not like to step inside and lie down for a while?"

"No, I thank you," Reade answered. "Unlike Hazelton, I feel very wide awake. When shall we go to the mine?"

"To-morrow, or the next day," replied the Mexican, with a gesture which almost said that "any day" would do. "First, you must both rest until you are wholly refreshed. Then you may want to stroll about the country a bit, and see the odd bits of natural beauty in these mountains, before you give too serious thought to work."

"But that is not our way, Don Luis," Tom objected. "When we are paid a thousand dollars a month apiece we expect to do an honest day's work six days in every week."

"Ah, then, to-morrow, perhaps we will talk about the work. And now, if you will pardon me, I will go inside for a few minutes in order to see about some business matters."

Readers of the "Grammar School Boys Series," the "High School Boys Series" and of the preceding volumes in the present series, will feel that they are already intimately acquainted with Tom Reade and Harry Hazelton, a pair of young civil engineers who, through sheer grit, persistence and hard study had already made themselves well known in their profession.

In the first volume of the "Grammar School Boys Series," Dick Prescott and his five boy chums, Greg Holmes, Dave Darrin, Dan Dalzell, Tom Reade and Harry Hazelton, were introduced under the name of Dick & Co. These six chums, standing shoulder to shoulder, made a famous sextette in school athletics. Their start was made during their grammar school days, when they had many adventures and did much in the field of junior sport. Their high school life, as set forth in the series of that name, was one of athletics, mixed with much study and efforts to find their true paths in life. In high school athletics the members of Dick & Co. won a statewide reputation, as to-day members of winning high school athletic teams are bound to do. It was during their high school days that Dick & Co. determined on their professions through life. Dick Prescott and Greg Holmes both secured competitive appointments to the United States Military Academy, and their further doings are set forth in the "West Point Series." Dave Darrin and Dalzell, with a burning desire for naval life, obtained appointments to the United States Naval Academy at Annapolis. What befell them is fully told in the "Annapolis Series." As for Tom Reade and Harry Hazelton, while still in high school they became seized with a strong desire for careers as civil engineers. They were fortunate enough to secure their first practice and training in a local engineering office in the home town of Gridley. Then, with vastly more courage than training, Tom and Harry went forth into the world to stand or fall as engineers.