one in the morning
before
`` Look , '' called Rose , from the window . `` It 's going to clear . Oh , see that wonderful rainbow . I do n't believe I ever saw one in the morning before . '' '' ` Rainbow at morning , sailors take warning , ' '' quoted Dorothy . `` I do n't believe in that , or any other _ unpleasant _ ` stupidstition ' -- as my reverend used to call them , '' Rose retorted , as she hastily began to dress , for the last time , in the blue striped costume which had been hers for nearly three years , but was , in a few hours , to change to one pure white , like a sombre chrysalis to a radiant butterfly . `` No matter when a rainbow appears it is always an omen of fair promise .