As quickly as he could Dave picked himself up once more and hurried into the camp.
Here he ran into Captain Broadbeam.
"Hullo, did you call?" asked the captain.
"No, it was Doctor Barrell," answered the young diver. "Where is he?"
For reply came another call from the scientific man, and now they located him down near the shore of the ocean. He was lying on his back, with a small tree pressing him down into the sand. The waves were sending their spray flying over him.
It was but the work of a moment to lift the tree. While Captain Broadbeam did this, Dave helped the doctor to crawl to a point of safety.
"Ugh! what an experience!" muttered Doctor Barrell, as he gave a shudder. "Thank you for rescuing me."
"How did it happen, doctor?" questioned Dave.
"I came out to look for you. Just as I reached the spot the wind sent the tree down and over me. I am thankful that I was not killed."
All hurried into camp, and here Dave told his story. Then they had to watch out, fearful that the storm would do them further injury.