It was this very fact, however, that saved them from more serious
injuries than severe joltings. The roof had collapsed, had broken
in the middle, and the squealing porkers were now running wild.
Most of them seemed to prefer the vicinity of the spot near where
the three aviators were now tumbled in a heap, having been thus
thrown by the concussion.

"Get out of here, you razor-back!" cried Dick, as a pig fairly
walked over him. He managed to struggle to his feet, but another
pig took that, seemingly, as an invitation to dart between the legs
of the young millionaire, and upset him.

Dick fell directly back on the form of Captain Grantly, who grunted
at the impact. Then, as Lieutenant Larson tried to get up, he, too,
was bowled over by a rush of some more pigs.

But the two army officers, and Dick, were football players, and they
knew how to take a fall, so were not harmed. Fortunately they had
been tossed out on a grassy part of the pen, and away from the muddy
slough where the porkers were in the habit of wallowing.

"Get out, you brutes!" cried Dick, striking at the pigs with a part
of one of the pen roof boards. Then, with the army men to help him,
he succeeded in driving the swine out of their way. This done, the
aviators looked at one another and "took an account of stock."

"Are you hurt?" asked the captain of Dick, grimly.

"No, only bruised a bit. As the old lady said of the train that
came to a sudden halt because of a collision, 'do you always land