"You mind and keep yours!" retorted Dave. "Remember, neither I nor my father can be scared by you."
"We have been hired to bring up that treasure and we mean to do it."
"I expect to do the same thing—and you shall not stop me."
"All right. Only look out, or you'll be running up a lot of trouble on your back!" came from Vixen, and then he and his mate fell back, and the two ships drifted apart, out of talking distance.
"They mean business," said Dave, to Captain Broadbeam.
"Yes, and they will cause you a lot of trouble if they can," replied the captain. "Watch them closely, every time they come near you."
The next day the hunt for the sunken treasure began in earnest.
CHAPTER XXVIII
THE DEMONS OF THE DEEP
As early in the day as possible Captain Broadbeam made another astronomical calculation and worked out the position of the Swallow on his set of charts.