Jim Carpenter had never agreed to the opinion almost unanimously held by the scientists as to the true nature of the magnetic heaviside layer. He was going to try and punch a hole through it McQUARRIE, the City Editor, looked up as I entered his office. "Bond," he asked, "do you know Jim Carpenter?" "I know him slightly," I replied cautiously. "I have met him several times and I interviewed him some years ago when he improved the Hadley rocket motor. I can't claim a very extensive acquaintance with him." "I thought you knew him well. It is a surprise to me to find that there is any prominent man who is not an especial friend of yours. At any rate you know him as well as anyone of the staff, so I'll give you the assignment." "What's he up to now?" I asked. "He's going to try to punch a hole in the heaviside layer." "But that's impossible," I cried. "How can anyone...." My voice died away in silence. True enough, the idea of trying to make a permanent hole in a field of magnetic force was absurd, but even as I spoke I remembered that Jim Carpenter had never agreed to the opinion almost unanimously held by our scientists as to the true nature of the heaviside layer.