Demonstrating Moments of Inertia

I have my first tutorials with the new Somerville freshers tomorrow.

I have just prepared my copy of "Somerville for Woman" to use for tomorrow's demonstration of moment of inertia and stability.

(I don't want to mess up my copy of the book, but the dimensions of the book are good for this demo and I can't think of that many books that it would be funnier to use tomorrow. A copy of the OED would be funnier to use for this, I suppose, but I don't have one and I don't have time to get one before tutorials tomorrow.)