nine o'clock
But if you want our room -- '' `` Of course we do , '' interposed Madeline calmly . `` It 's the only decent-sized one in the house . Go and straighten it up , and let this be a lesson to you to keep it in order hereafter . Polly , you invite the freshmen for nine o'clock . I 'll get some more sophomores and seniors , and some costumes . Come back here to dress in half an hour . '' `` Goodness , '' said the stately Lucile , slipping out of her nest of pillows .