boys in the party. Professor Zepplin had already risen and was
walking toward the car door.

The Northern Pacific train on which they were riding, came to a
slow, noisy stop. From it, alighted the four boys, sun-burned,
clear-eyed and springy of step. They were clad in the regulation
suits of the cowboy, the faded garments giving evidence of long
service on the open plains.

Accompanying the lads was a tall, athletic looking man, his face
deeply bronzed from exposure to wind, sun and storm, his iron gray
beard standing out in strong contrast, giving to his sun burned
features a ferocious appearance that was not at all in keeping with
the man's real nature.

A man dressed in a neat business suit, but wearing a broad brimmed
sombrero stepped up to the boys without the least hesitation, the
moment they reached the platform.

"Are you the Pony Rider Boys?" he asked smilingly.

"We are, sir," replied Tad, lifting his hat courteously.

"Glad to know you, young man. I am Mr. Simms the banker here. I was
requested by banker Perkins of Chillicothe, Missouri, to meet you
young gentlemen. Funds for your use while here are deposited in my
bank ready for your order. Where is Professor--Professor----"

"Zepplin?"