pile made a soft seat. Soon there came a crack of a whip, and they were off, down a sandy high way leading directly to the sea. Soon the salt air filled their nostrils.
"Oh, we're in good shape to give the Dons a hot reception, if they show themselves around here," said one of the soldiers, in reply to a question from Walter. "We've got some of the finest guns in the country at the fort, and can reach a ship ten or twelve miles out in the harbor."
"I should like very much to inspect a real fort," answered the youth. "The guns must be even more complicated than on board a warship."
"The disappearing guns are very fine. But I doubt if you could get permission to go through now—at least, not until you were duly enlisted into the navy and had your uniform on. You know we have strict orders to keep all outsiders at a distance. We don't want any Spanish spies to get plans of our hidden batteries and the fort itself."
"Would they dare to try to get them?" asked Si. "'Pears to me that would be a mighty risky piece of business."
"Certainly they would try. You mustn't think
