"
Bob's enthusiasm, as always, was growing with the presentation of this
new and mighty problem of engineering so succinctly presented. It
sounded simple; but from his two years' experience he knew better. He
was becoming accustomed to filling in the outlines of pure theory. At a
glance he realized the importance of such things as adequate anchors for
the donkey engines; of figuring on straight pulls, horse power and the
breaking strain of steel cables; of arranging curves in such manner as
to obviate ditching the logs, of selecting grades and routes in such
wise as to avoid the lift of the stretched cable; and more dimly he
guessed at other accidents, problems and necessities which only the
emergency could fully disclose. All he said was:
"So that's why you bark them all--so they'll slide. I wondered."
But now the ponies, who had often made this same trip, pricked up their
ears and accelerated their pace. In a moment they had rounded a hill and
brought their masters into full view of the mill itself.
The site was in a wide, natural clearing occupied originally by a green
meadow perhaps a dozen acres in extent.
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