Jackson, Thomas Graham, Sir, 1835-1924 · Cambridge : University Press · leaf 113
o support a fiat pyramidal roof of timber. Theplan being circular presents no difficulty to the con-struction of the dome, which is steadied not only by thegreat thickness of the outside wall, but by the weightof the brick drum that surrounds and conceals it.Though constructed probably at the end… … LONGITUDINAL SECTION
