The way to the shore lay through a thick jungle, with here and there a treacherous swamp.
With extreme caution they left the cave and started up the stream and into the jungle.
They were constantly on the lookout for the savages, but a quarter of a mile was covered and not a native showed himself.
"Dave scared them for fair," said Bob. "Perhaps they have left the island altogether."
"Don't be afther foolin' yerself," answered Pat Stoodles. "Thim haythins is wust whin they are sthill."
In this remark the Irishman was correct, for hardly had he spoken when an arrow whizzed through the air and pierced Doctor Barrell's hat.
"They are after us!" cried several in chorus.
"We must run fer it!" came from Stoodles. "Folly me, an' be amazin' quick about it, too," and away he leaped at top speed.
Nobody needed a second warning, and all kept as close to the Irishman's heels as possible. He led them into a thicket of vines and underwood. In the meantime several more arrows came flying through the air, and Dave was struck in the shoulder.
"I am hit!" he murmured, and stopped short.