'At least, he would be if he understood Trilinear Co-ordinates.' 'Are _you_ strong in mathematics, Mrs.Micklethwaite ?' asked Everard.
'I?
Oh dear, no! I never got much past the Rule of Three.

But Tom has forgiven me that long ago.' 'I don't despair of getting you into plane trigonometry, Fanny.

We will gossip about sines and co-sines before we die.' It was said half-seriously, and Everard could not but burst into laughter.
He sat down with them to their plain midday meal, and early in the afternoon took his leave.

He had no inclination to go home, if the empty fiat could be dignified with such a name.

After reading the papers at his club, he walked aimlessly about the streets until it was time to return to the same place for dinner.