"There, where you see the bushes trampled down. What there is left of
it, anyway. But perhaps the canvas wrapped around the stuff has
protected it from serious damage."

"Little difference it makes to us whether or not," answered the
Professor. "The supplies are lost and that's all there is about it.
We have scarcely enough left to carry us through the day."

"No!" said Walter. "Then what are we going to do?"

"I don't know, Master Walter."

"We've got to get the stuff up here, that's all," answered Tad, with a
firm compression of the lips.

"Then you'll have to borrow a flying machine if you do. That's the
only way we'll ever reach the pack mule. Why, it's a mile down
there--"

"Not quite," answered Tad.

"How deep do you think the gorge is, Tad?" asked the Professor.

"Oh, forty or fifty feet, I should say. I hardly think it is deeper
than that. But that is quite enough--"

Tad, in the meantime, had been considering the problem, thinking
deeply on the best means of solving it.