This line, following a tender serenade, is a gross non sequitur. The literary work to which Box refers is the British railroad timetable, Bradshaw’s Railway Guide, which was printed at monthly intervals from 1841 to 1961. My reference is a more interesting Bradshaw (50) slightly modified by (56). The turnabout here is based on the typical, stern Victorian husband who would not allow his wife to read spicy novels. Here’s a wife who won’t let her husband read a timetable. Sorry to beat this joke to death; let’s press on.