It must not be inferred that because the boys were engaged in work which was all-absorbing that they had no thoughts of home, and had given up all hopes of a final rescue. If they could only let the people at home know they were alive and happy—that is, in learning the secrets of nature and in the exciting exploring trips, they would be satisfied.
They had no time to think of these things when they were at work, but in the night their thoughts often wandered back again to their homes and friends. Could they be blamed for that homesick feeling which came over them?
"Now lead the way, George; we want to see some more of your mysteries. Isn't it fortunate that the tide is out? It will give us a good chance to investigate."
The path which George had taken was farther to the right, but as he was in a hurry to get down as quickly as possible he followed a course, which was much steeper, with Harry and the Professor close on his heels.
When the bottom was reached there was no sign of a pocket, or a cave, or anything of that kind. George was very much annoyed. He could not be mistaken in the position, as it was directly to the right of Observation Hill, and not three hundred feet from the spot where Harry had landed on his first trip to the island.
"It seems to me, George, we are too low down. At high tide this place is all covered with water. It must he higher up in the cliff sides."
Harry scrambled up again part way, and shortly afterwards cried out: "I have found something here; come up at once."
He was distant not more than twenty feet above them, but so rugged were the cliffs that the opening was entirely hidden from below.