The young diver had less than half an hour to remain on guard when his attention was attracted to a peculiar sound among the trees close at hand. He looked in the direction, and was horrified to see two shining eyes glaring down at him. "A wild beast, sure," he reasoned. "Wonder if the thing wants to attack me?" As quickly as he could, he got his bow into position and adjusted one of the arrows to the string. The eyes were still turned upon him and the sight was enough to make his blood run cold. "Here goes!" he muttered, and taking careful aim, he let the arrow fly with all force. His aim was true, and no sooner had the arrow struck than there was an unearthly shriek, and out of the tree dropped a large dark object. It flipped and flopped over the ground, uttering snarl after snarl. "What's the row?" cried Captain Broadbeam, leaping to his feet and seizing a club. "I've struck something!" answered Dave. "Take care!" "It's that gorilla!" "So I see--now," said the young diver. The creature was seriously but not mortally wounded and continued to flop around, uttering the most unearthly of shrieks and cries, which awoke all of the others in the camp. "In mercy's name what does this mean?" demanded Doctor Barrell, nervously. "Here is your gorilla, doctor!" sang out Dave. "Come and get him if you want him." "Ugh! what a horrid creature. Is--is he dangerous still?" "He will be if you get too close to him." "Kill him! kill him!" cried Bob. "Don't let him come this way!" Watching his opportunity, Captain Broadbeam let fly with his club, hitting the gorilla in the neck. Then Dave put another arrow into the creature's body, and at last it gave a shudder and a gasp and rolled over dead. "Kilt, is it?" came weakly from Pat Stoodles. "Sure an' it's a good job done, so it is!" The camp-fire was stirred up and the captain picked up a torch and walked over to the gorilla. "Dead as a stone," he announced, and then Dave and the doctor approached. "We can save the skin and the skull," said Doctor Barrell. "They, at least, can do us no harm." "I am glad he is dead," came from the captain. "Dave, you gave him a good one in the eye." "I'm glad I had the bow and arrow to do it with," answered the young diver modestly. After this Captain Broadbeam went on guard, and, utterly exhausted, Dave lay down and slept soundly until long after the sun came up on the following morning. "Now I feel like a new man," said the young diver on arising. "I can tell you a sound sleep is a wonderful thing." "The question is, what are we to do next?" came from the doctor. "We cannot remain on this island forever." "Well, we shall have to remain until some ship takes us off," said Captain Broadbeam. "And in the meantime we have got to provide for ourselves," put in Dave. "And that is not going to be so easy unless we live on clams, oysters, fish, and berries." "Don't forget the birds," said the captain.