red-headed son of yours glaring at me. "That's a lot of hammering you're doing, son," I said. "That's the only way I can get these boxes open, and don't call me son." "I don't like to disturb you, Mr. Gretch, but Mrs. Burroughs is a little upset over the way you acted today. I think you ought to come down for a cup of tea and get acquainted." "I know I was rude," he said, looking a little ashamed, "but I have waited for years for a chance to get to work on my own, with no interference. I'll come down tomorrow, when I have got my equipment set up, and apologize to Mrs. Burroughs then." I asked him what he was working on, but he said he would explain later. Before I got out of the door, he was hammering again. He worked till after midnight. We saw Jack at mealtimes for the next few days, but he didn't talk much. We learned that he was twenty-six, in spite of his looking like a boy in his teens, that he thought Prof. Einstein the greatest man ever, and that he disliked being called son. Of his experiment, he didn't have much to say then. He saw Mrs. Burroughs was a little nervous about his experimenting in the guest room and he assured her it was not dangerous. Before the week was out, we started hearing the noises. The first one was like a wire brush going around a barrel. It went whisk, whisk. Then he rigged up something that went skaboom every few seconds, like a loud heartbeat. Once in a while, he got in a sound like a creaky well pump, but mostly it was skaboom and whisk, which eventually settled down to a steady rhythm, whiskaboom, whiskaboom. It was kind of pleasant. Neither of us saw him for two days. The noises kept going on. Mrs. Burroughs was alarmed because he did not answer her knock at mealtimes, and one morning she charged upstairs and hollered at him through the door. "You stop your nonsense this minute and come down to breakfast!" "I'm not hungry," he called back. "You open this door!" she ordered and, by George, he did. "Your whiskaboom or whatever it is will keep till after breakfast." He sat at the table, but he was a tired boy. He had a cold, his eyelids kept batting, and I don't believe he could have lifted his