“Wednesday.”
“I thought so. I always set it right on Sunday night, Isabel. It gains five minutes a day. Compute the time till Wednesday night. Q. E. D.”
“Quod erat demonstrandum,” filled in Isabel. “I’m taking geometry myself this year. You girls ought to have heard Dr. Norris call me down in class the other day. I was not sure of the demonstration at all but I went through with it and wound up grinning with ‘which was to be proved,’ and Dr. Norris just smiled and said, ‘and which remains to be proved, Miss Hunt!’”
“Quod erat demonstrandum,” quoted Betty in appreciation and looking off into space, she traced angles and circles with both hands and feet.
“Think what a teacher Betty will make,” laughed Lilian.
“Do let me fix the clock for you,” said Isabel, “Who has the exact time?”
“Cathalina’s wrist watch is at the jeweler’s, Betty left hers on Juliet’s chiffonier and Lilian lost hers last summer. She is promised one for Christmas. But anyhow, we’d forget it was fixed and be all mixed up!”
“I kept mine on one day when I went in swimming, and when I finally took it to the jeweler, he said I’d have to have new works. If I’d put some oil in it or something, or dried it right away, he said, it might have been all right. It seems that works rust. They aren’t just gold or silver or jewels as I thought!”
“Your pretty little watch!” sighed Hilary.
“Yes,” said Isabel, bravely, “I’ve had a weep or two over it, and of course I shan’t break the news to Father till I go home at Christmas, if I do, I’m going to get an alarm clock, too, the first time I go in to Greycliff. Didn’t you ever think of having your clock regulated, Hilary?”