When the laughing had ceased Bert made the next announcement.
"Ladies and gentlemen," he said, "we will now introduce our famous menagerie. First we have the singing mice."
"They're mine!" called Freddie, but Nan insisted on him keeping quiet.
"Now you will hear the mice sing," said Bert, and as he held up the cage of little mice somebody whistled a funny tune back of the scenes.
"Good! good!" called Mr. Bobbsey. "We've got real talent here," he added, for indeed the boys had put together a fine show.
"Now you see our aquarium," went on Bert as Harry helped him bring forward the table that held the glass tank.
"Here we have a real sea serpent," he said, pointing to a good fat chub that flopped around in the water.
"Let the little ones walk right up and see them," Bert said. "Form in line and pass in this way."
Not only the children went up, but grown folks too, for they wanted a look into the tank.
"Now here are our alligators and crocodiles," announced Bert, pointing his whip at the turtles.