Clara brightened up. "I should like to try again, very much," she said. "I'll take more care this time. How are we to play?"
To this question Mad Mathesis made no reply: she was busy drawing lines down the margins of the catalogue. "See," she said after a minute, "I've drawn three columns against the names of the pictures in the long room, and I want you to fill them with oughts and crosses—crosses for good marks and oughts for bad. The first column is for choice of subject, the second for arrangement, the third for colouring. And these are the conditions of the match. You must give three crosses to two or three pictures. You must give two crosses to four or five"
"Do you mean only two crosses?" said Clara. "Or may I count the three-cross pictures among the two-cross pictures?"
"Of course you may," said her aunt. "Any one, that has three eyes, may be said to have two eyes, I suppose?"
Clara followed her aunt's dreamy gaze across the crowded gallery, half-dreading to find that there was a three-eyed person in sight.
"And you must give one cross to nine or ten."
