Miss Birks's birthday fell on the 1st April, and so did Betty Scott's. It was not a particularly happy date for an anniversary, but they both declared they liked it. To Betty it was certainly a chequered event, for the girls treated her to the jokes they dared not play on the head-mistress, and she had to endure a double dose of chaffing. But, on the other hand, a birthday shared with Miss Birks was luck above the common. There was invariably a whole holiday, and some special treat to celebrate the occasion. The nature of the festival depended so entirely upon the day that it was not generally decided till the last minute, which added an element of surprise, and on the whole enhanced the enjoyment. Whether this year's jollification would be outdoors or indoors was naturally a subject of much speculation, but the morning itself settled the question. Such a clear blue sky, such brilliant sunshine, and so calm a sea pointed emphatically to an excursion by water, and Miss Birks at once decided to hire boats, and take the school for a picnic to a little group of islets due west of the headland. The girls loved being on the sea, and did not often get an opportunity of gratifying their nautical tendencies, for they were, of course, never allowed to hire boats on their own account. Miss Birks was too afraid of accidents to permit lessons in rowing, though many of her pupils thirsted to try their skill with the oars, and had often vainly begged leave to learn in the harbour. To-day three small yachts, with steady and experienced boatmen, were waiting by the quay at Pontperran, and even Mademoiselle--the champion of timorous fears--stepped inside without any nervous dread of going to the bottom of the ocean. It was delightful skimming out over the dancing, shining water, so smooth that the worst sailor could not experience a qualm, yet lapping gently against the bows as if it were trying to leap up and investigate the cargo of fair maidens carried on its bosom. With one accord the girls struck up some boat songs, and the strains of "Row, brothers, row!" or "Speed, bonny boat, like a bird on the wing, Over the sea to Skye," rang clear and sweet in the fresh spring air.