Part,  Chapter

1     I,       I| watch-house with its black leaden roof, the high signal-pole in
2     I,      II|       small stones crashed on the roof of the cars.~ ~I did not
3     I,      II|          the others, while on its roof fell, with thunderous violence,
4    II,       I|           foliage forming a shady roof above the little circuit
5    II,       I|           and table and the green roof and walls above and around.~ ~