“One moment now, Susan! Don’t move. Stand very still!”

“What for? Am I going to have my picture took?” asked a voice Jerry recognized as that of his mother’s maid.

“No, I am not going to photograph you,” was the answer. “But there is a very rare specimen of a blue lady-bug on your left shoulder and I want to get it for——”

“A bug! The saints preserve me! Take it off quick!” cried Susan.

“One moment! There, I have it!” was exclaimed triumphantly, and the boys, with one accord, as they looked at each other cried out:

“Professor Snodgrass!”

It was indeed he, and a moment later the jolly little bald-headed scientist stepped to the door, holding tightly in one hand the new bug he had captured.

“Ah, good morning, boys!” he exclaimed. “Well, you see I came here again, and this time I think you’ll agree that I have a difficult quest under way.”

“Is it to get more luminous snakes?” asked Jerry, as he and his chums shook hands with the professor.