e had been going, and standing on it, with his head well out of
the water, he turned to speak to Ralph. At that moment his feet slipped
from the slimy object on which he stood, and he fell backward into the
water, still grasping, however, his upright support. But this did not
remain upright more than an instant, but yielded to his weight, and the
end of it which he held went down with him. As he sank, the captain, in
his first bewilderment, did not loosen his grasp upon what had been his
support, and which still prevented him from sinking rapidly. But in a
moment his senses came to him, he let go, and a few downward strokes
brought him to the surface of the water. Then he struck out for the point
of rock for which he had been aiming, and he was soon mounted upon it.

"Hi!" shouted Ralph, who had been so frightened by the captain's sudden
sinking that he nearly fell off his narrow seat, "I thought something had
pulled you down."

The captain did not explain. He was spluttering a little after his
involuntary dive, and he wanted to get back as soon as possible, and so
wasted no breath in words. In a few minutes he felt himself ready for the
return trip, and getting into the water, he swam to Ralph. Following the
directions given him, the boy let himself down into the water behind the
captain, and placed his hands upon the latter's hips, firmly grasping the
waistband of his trousers. Then urging the boy not to change his
position, nor attempt to take hold of him in any other way, the captain
struck out across the lake, Ralph easily floating behind him.

When they stood upon the shelf on the other side, and Ralph, having
rubbed himself down with the captain's jacket, put on his clothes,
Captain Horn rather sternly inquired of him how he came to do such a
foolish and wicked thing as to run the risk of drowning himself in the
lake at a time when his sister and his friends had already trouble enough
on their minds.

Ralph was sorry, of course, that the captain had to come after him, and
get himself wet, but he explained that he wanted to do something for the
good of the party, and it had struck him that it would be a very sensible
thing to investigate the opening on the other side of the lake. If he
could get out of that great gap, he might find some way of climbing out
over the top of the rocks and get to the place where his flag was, and
then, if he saw Mr. Rynders coming, he could wave it. It would be a great
thing if the