"Who took it?" demanded Bobby wrathfully. "You needn't tell me that lunch walked off!"
High and clear and shrill, a familiar whistle sounded back of them.
"That's Bob!" Betty's face brightened, "Listen!"
She gave an answering whistle, and Bob's sounded again.
There was a scrambling among the bushes, and a group of cadets burst through. Bob and the Tucker twins were first, and after them, came Gilbert Lane and Timothy Derby and Winifred Marion Brown.
"Hello, anything the matter?" was Bob's greeting. "You look rather glum."
"So would you," Betty informed him, "if you were starving after a morning's work and your lunch was stolen."
"Gee, that is tough!" exclaimed Bob sympathetically. "Who stole it?"
"We don't know," volunteered Bobby. "But all those boxes couldn't take wings and fly away."
"You go back and get the fellows," Bob commanded Tommy Tucker. "We were having a potato roast down by the lake, and while the potatoes were baking some of us came up for more wood," he explained to the girls. "We thought we heard voices, and so I whistled."
