began to drift out of the house and
make for the tents in groups of twos and threes, with their arms thrown
around each other's shoulders. The new girls followed, some feeling shy
and a bit homesick this first night away from home; others already
perfectly at home, their arms around a new friend made in the short time
since their arrival. One such was Jean Lawrence, who, upon being
informed that she was to be "tenty" to Katherine and Oh-Pshaw in Bedlam,
expressed herself as being unutterably delighted with her tent mates and
walked off with them chattering as easily as though she had known them
all her life.

There was more or less confusion this first night before everyone got
settled, for many of the girls had never camped before and were
unskilled in the art of undressing rapidly in the close quarters of a
tent, and "Taps" sounded before a number were even undressed. The Lone
Wolf was lenient this first night, however, and did not insist upon
prompt lights out, an act of grace which added greatly to her
popularity.

Sahwah's bed sagged somewhat in the middle and she was not able to
adjust herself to its curves very well; consequently she did not fall
asleep soon. Camp quieted down; the last rustle and whisper died away;
silence enfolded the tents around. Sahwah, lying wide awake in the
darkness, her senses alert, heard the sound of footsteps running at full
speed along the top of the bluff and across the bare rocks at the edge.
Here the footsteps seemed to come to a pause, and an instant later there
came a sound like a loud splash in the water below. Filled both with
curiosity and apprehension, Sahwah leaped from bed and raced for the
edge of the bluff, where she stood peering down at the river. No unusual
ripple appeared on the placid surface of the river; as far as she could
see it lay calm and peaceful in the moonlight.

A footstep behind her startled her, and she turned to see Miss Judy
coming toward her from the tent.

"What's the matter?" called Miss Judy, when she was within a few yards
of Sahwah.

"It sounded as though someone jumped off the cliff," replied Sahwah. "I
heard footsteps along the edge of the bluff, and then a splash, and I
ran out to see what was going on, but I can't see anything."

To Sahwah's surprise, Miss Judith laughed aloud. "Oh," she said, "did
you hear it?"

"What was it?" asked Sahwah, curiously.

"That," replied Miss Judy, "is what we call the Great Mystery Sound. We
hear