It was Internal Revenue.
"Right! right!" Condy shouted gleefully, as he and Blix were on their way home.

"I knew it.

She's done with Ash--Bol, Bol--Car, and all those, and has worked through Cod--Dem, and Dem--Eve.

She's down to Hor--Kin now, and she'll go through the whole lot before she's done--Kin--Mag, Mag--Mot, Mot--Pal, and all the rest." "The Encyclopaedia ?" "Don't you see it?
No wonder she didn't know beans about Gibraltar! She hadn't come to the G's by then." "She's reading the Encyclopaedia." "And she gets the volumes on the installment plan, don't you see?
Reads the leading articles, and then springs 'em on us.

To know things and talk about em, that's her idea of being cultured.