would resume again, one paw after another so fast that
you could scarce see them going--"hand over hand," as
sailors would have called it--while the sand flew out
between his hind legs in a continuous shower. When
the sand accumulated so much behind him as to impede
his motions he scraped it out of his way, and set to
work again with tenfold earnestness. After a good
while he paused and looked up at Dick with an
"it-won't-do,-I-fear,-there's-nothing-here" expression on his
face.