What's in an atom The innermost substratum? That's the problem he is working at today. He lately did discover How to shoot them down the player, And the poor little things can't get away. He uses as munitions On his hunting expeditions Alpha particles which out of Radium sprang.

In: Ruth Moore, Niels Bohr: The Man, His Science, and the World They Changed - Chapter 7 (p. 113)