This car was now in shape for the long trip to Wyoming. When Jerry advised Bob to look at the map he meant that they would take from Boston a route to Square Z ranch that would not carry them near Arizona, a northern trend being followed.

They would cross the lower part of New York State, skirt through Pennsylvania and Ohio and on, running a pretty straight course through Nebraska into Wyoming. Square Z ranch was located in the Great Divide Basin, at the foot of the Green Mountains on Muddy Creek and about a hundred miles, in an air line, from the Medicine Bow Forest Reservation, one of the government wonder-spots. The Union Pacific Railroad ran about thirty miles from the ranch.

“But we’ll be independent of that with our auto and airship,” said Bob, as he finished the cheese and started to eat some cold roast beef Ned had set out for his chums.

The boys had completed arrangements to take one of their air craft. It was not the big, combined dirigible balloon and aeroplane, in which they had had some wonderful adventures, but a biplane which could carry four comfortably, and five when necessary.

This craft would be shipped to Bodley, the nearest railroad station, and there put together by the boys, who felt they would find good use for it over the Western plains.

“And I have a notion,” commented Ned, as they finished the lunch and prepared to resume work on the big automobile, “that the airship will be just what we need to discover the cattle thieves. We can circulate in the clouds and spy down on them when they drive off bunches of dad’s choice steers.”

“It sounds well,” remarked Bob. “What I’m counting on is having some choice steaks roasted over an open fire.”

“It’s a habit with him,” sighed Jerry. “He’ll never get over it.”

“Doesn’t seem so,” agreed Ned.