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specimen cases, but Dolf's eye was caught by the net. He picked it up, felt its weight, swung it at an imaginary insect and almost knocked a picture from the wall. After that he put it down, abashed, and stuck his hands in his pockets, and began to walk restlessly about the room.

"Oh, come on," he said to Bill. "What are you staring at those things for? They're only dead butterflies."

"Go 'way," Bill said absently. There were some papers scattered on the center table, and he took one, and half laid it on the case, and took a pencil from his pocket, and began to sketch. A shadow fell across him but, absorbed, he did not notice it.

"Don't mind him, Mr. Woods," came Dolf's voice. "Bill's always drawing things. He thinks he's an artist."

Bill, recalled to life, started to thrust the paper out of sight. The Butterfly Man caught his hand.

"I didn't know you could do that," he said.

"I don't know as I can," Bill said frankly. "I just do it for fun. I like to draw little things—butterflies, caterpillars, beetles, flies, spiders."

"Oh, I knew I was going to hit it off with you," said the Butterfly Man, and thrust Bill's sketch into his pocket.

Ten minutes later the boys were in the house of glass. When Bert had entered it on his last trip he had come alone; but now Tom Woods was with