Wonderful!" murmured Ernest.

Elsa made a face at her brother and Roger went on with a grin. "So I'm
trying first of all to develop a practical, efficient engine that will
run with the temperatures I'm able to get from Sun Heat."

"And won't the model work at all? Not a bit?" asked Elsa.

"She just sits and looks at me without moving a muscle," replied Roger.

"Can't the Dean tell you what's the matter?" Elsa ventured.

"The Dean!" snorted Ernest. "Isn't that just like a girl? Why, Roger
knows more about low pressure engines in a minute than the Dean'll know
in his whole life. Come on, Rog, if you've finished your kindergarten.
Let's go up to see Florence King and her bunch at the Beta house. It
will rest our brains."

"Not for me," replied Roger. "I've done enough girling to last me a
spell. I'll stay here and educate Elsa till she goes to choir practice,
then I'm going home and bone on that design."

"Sorry for you," sniffed Ernest, and was off.

Roger deposited Elsa at the church door, then returned to Mrs.
Winkler's. The light burned in his cold little room nearly all night.
But when he went to bed, sketches for the complete redesigning of the
engine lay on his table. And it was this changed design which he kept
through all the vicissitudes of struggling to market his dream.

During his senior year, Roger, with Ernest and other promising men of
the graduating class, had several jobs offered him by different
manufacturing and engineering concerns. In the earlier days of the
University, a young graduate of the School of Engineering had been
looked on with contempt by the business men of the state. He was a
"book" engineer to them, just as a graduate of the School of Agriculture
was a "book" farmer to the farmers of the state.

But, as the years had gone on, it was observed that the minor jobs,
obtained with difficulty by the men whom Dean Erskine had trained and
recommended, nearly always became jobs of fundamental importance. The
observation bore fruit. Little by little "Dean Erskine men" were
scattered across the continent until even as early as Roger's graduating
year, it was the custom of engineering concerns and manufacturers to
watch the Dean's laboratories closely and to bespeak the services long
before commencement of every promising lad in the class.

By the Dean's advice, however, Roger did not accept any of these
positions. He decided to take an instructorship in the University and
keep on with