"Put what back, I wonder?" said Billy to himself, as he sat up.

"And give the doctor a surprise."

"Huh! he won't be the only one surprised!" growled some one, and
Billy thought it was Herring this time.

"That fellow is up to some mischief," he muttered, "and I must find
out what it is."

Then he jumped out of bed, put on his trousers and shoes, and crept
softly outside.




CHAPTER XIV

BILLY'S NOCTURNAL ADVENTURE


It was dark in the camp, but Billy, as he stole out of the tent,
could distinguish a dark form moving swiftly down the camp street,
and followed without making any noise, taking care to keep as much
as possible in the shadow.

Unless the person he was following should happen to look around,
there was very little danger of his being seen, but he took all the
precautions he could to avoid being detected.