'Taking duty' makes certain definite calls upon a man. He has to answer questions; break up fights; stop big boys bullying small boys; prevent small boys bullying smaller boys; check stone-throwing, going-on-the-wet-grass, worrying-the-cook, teasing-the-dog, making-too-much-noise, and, in particular, discourage all forms of hara-kiri such as tree-climbing, water-spout-scaling, leaning-too-far-out-of-the-window, sliding-down-the-banisters, pencil-swallowing, and ink-drinking-because-somebody-dared-me-to.