Part 2 -- Other Worlds Section 21 -- How I tried to teach the Theory of Three Dimensions to my Grandson, and with what success Section 22 -- How I then tried to diffuse the Theory of Three Dimensions by other means, and of the result Preface to the second and revised edition, 1884 The End of...

Part 2 -- Other Worlds Section 19 -- How, though the Sphere showed me other mysteries of Spaceland, I still desired more; and what became of it Section 20 -- How the Sphere encouraged me in a Vision