Please do not think because Miss Birks's pupils, on the first night of a new term, ran helter-skelter up and down the passages, and insisted on compulsory dancing or solo singing, that this was their normal course of procedure. It was but their one evening of liberty before they settled down to ordinary school routine, and for the rest of the eighty-eight days before Easter their behaviour would be quite exemplary.

They were a very happy little community at the Dower House. They admired and respected their headmistress, and her well-framed rules were rarely transgressed. Certainly the girls would have been hard to please if they had not been satisfied with Miss Birks, for allied to her undoubted brain power she had those far rarer gifts of perfect tact and absolute sympathy. She thoroughly understood that oft-time riddle, the mind of a schoolgirl, and, while still keeping her authority and maintaining the dignity of her position, could win her pupils' entire confidence almost as if she had been one of themselves.

"Miss Birks never seems to have quite grown up! She enjoys things just the same as we do," was the general verdict of the school.

Perhaps a strain of Irish in her genealogy had given the Principal the pleasant twinkle in her eye, the racy humour of speech, and the sunny optimistic view of life so dearly valued by all who knew her. Anyhow, whatever ancestry might claim to be the source of her cheery attributes, she had a very winning personality, and ruled her small kingdom with a hand so light that few realized its firmness. And a kingdom it was, in the girls' opinion—a veritable "kingdom by the sea". No place in all the length and breadth of the British Isles, so they considered, could in any way compare with it. Together with the old castle, for which it formed the Dower House, it stood on the neck of a long narrow peninsula that stretched for about two miles seaward. All the land on this little domain was the private property of Mrs. Trevellyan, the owner of Pontperran Tower, from whom Miss Birks rented the school, and who had granted full and entire leave for the pupils to wander where they wished. The result of this generous concession was to give the girls a much larger amount of freedom than would have been possible in any other situation. The isolated position of the peninsula, only accessible through the Castle gateway, made it as safe and secluded a spot as a convent garden, and afforded a range of scenery that might well be a source of congratulation to those who enjoyed it.

There are few schools that possess a whole headland for a playground, and especially such a headland, that seemed so completely equipped for the purpose. It held the most delightful of narrow coves, with gently shelving, sandy beaches—ideal bathing places in summer-time—and mysterious caverns that might occasionally be explored with a candle, and interesting pools among the rocks, where at low tide could be found seaweeds and anemones, and crabs and limpets, or a bestranded starfish. On the steep cliffs that rose sheer and jagged from the green water the seabirds built in the spring; and at the summit, on the very verge of the precipice, bloomed in their season many choice and rare wild flowers—the lovely vernal squill, with its blossoms like deep-blue stars; the handsome crimson crane's-bill; the yellow masses of the "Lady's fingers"; the pink tufts of the rosy thrift; or the fleshy leaves of the curious samphire. The whole extent of the headland was occupied by a tract of rough, heathery ground, generally called "the warren". A few sheep were turned out here to crop the fine grass that grew between the gorse bushes, and a pair of goats were often tethered within easy reach of the coachman's cottage; but otherwise it was the reserve of the rabbits that scuttled away in every direction should a human footstep invade the sanctuary of their dominion.

On these delightful breezy uplands, where the pleasant west wind blew fresh and warm from the Gulf Stream, Miss Birks's pupils might wander at will during play hours, only observing a few sensible restrictions. Dangerous climbs on the edge of the cliffs or over slippery rocks were forbidden, and not less than three girls must always be together. This last rule was a very necessary one in the circumstances, for in case of any accident to a member of the trio, it allowed one to stay with the sufferer and render any first aid possible, while the other went at topmost speed to lodge information at head-quarters.

The old dwelling itself was a suitable and appropriate building for a school. Erected originally in the fourteenth century as a small nunnery, it had in the days of Edward VI fallen into the hands of the then lord of the Castle, who had turned it into a dower house. Successive generations of owners had in their time added to it or altered it, but had not spoilt its general atmosphere of mediaevalism. Little pieces of Perpendicular window tracery, or remains of archways were frequent in the old walls, and a ruined turreted gateway bore witness to the beauty of the ancient architecture. Nobody quite knew what vaults and cellars there might be under the house. Remains of blocked-up staircases had certainly been found, and many of the floors resounded with a suggestively hollow ring; but all tradition of these had been lost, and not even a legend lingered to gratify the curious.

There was one element of mystery, however, which formed a perennial interest and a never-ending topic of conversation among the girls. In the centre of the first landing, right in the midst of the principal bedrooms, stood a perpetually-closed room. The heavy oak door was locked, and as an extra protection thick iron bars had been placed across and secured firmly to the jambs. Even the keyhole was stopped up, so that the most inquisitive eye could obtain no satisfaction. All that anybody knew was the fact that Mrs. Trevellyan, who had a well-deserved reputation for eccentricity, had caused a special clause to be made in the lease which she had granted to Miss Birks, stipulating for no interference with the barred room under pain of forfeiture of the entire agreement.

"That means if we bored a hole through the door and peeped in the whole school would be turned out of the house," said Evie Bennett once when the subject was under discussion.

"Even Miss Birks doesn't know what's inside," said Elyned Hughes with an awed shudder.

"Mrs. Trevellyan wouldn't let the place on any other conditions. She said she'd rather have it empty first," added Annie Pridwell.

"What can she have there?"

"I'd give ten thousand pounds to find out!"

But though speculation might run rife in the school and a hundred different theories be advanced, there was not the slightest means of verifying a single one of them. Ghosts, smugglers, or a family skeleton were among the favourite suggestions, and the girls often amused themselves with even wilder fancies. From the outside the secluded room presented as insuperable a barrier as from within; heavy shutters secured the window and guarded the secret closely and jealously from all prying and peeping. That uncanny noises should apparently issue from this abode of mystery goes without saying. There were mice in plenty, and even an occasional rat or two in the old house, and their gnawings, scamperings, and squeakings might easily be construed into thumps, bumps, and blood-curdling groans. The girls would often get up scares among themselves and be absolutely convinced that a tragedy, either real or supernatural, was being enacted behind the oak door.

Miss Birks, sensible and matter-of-fact as became a headmistress, laughed at her pupils' notions, and declared that her chief objection to the peculiar clause in her lease was the waste of a good bedroom which would have been invaluable as an extra dormitory. She hung a thick plush curtain over the doorway, and utterly tabooed the subject of the mystery. She could not, however, prevent the girls talking about it among themselves, and to them the barred room became a veritable Bluebeard's chamber. At night they scuttled past it with averted gaze and fingers stuffed in their ears, having an uneasy apprehension lest a skeleton hand should suddenly draw aside the curtain and a face—be it ghost or grinning goblin—peer at them out of the darkness. They would dare each other to stand and listen, or to pass the door alone, and among the younger ones a character for heroism stood or fell on the capacity of venturing nearest to the so-called "bogey hole".

Though Miss Birks might well regret such a disability in her lease of the Dower House, she was proud of the old-world aspect of the place, and treasured up any traditions of the past that she could gather together. She had carefully written down all surviving details of the Franciscan convent, having after endless trouble secured some account of it from rare books and manuscripts in the possession of some of the country gentry in the neighbourhood. Beyond the dates of its founding and dissolution, and the names of its abbesses, there was little to be learnt, though a few old records of business transactions gave an idea of its extent and importance.

Dearly as she valued the fourteenth-century origin of her establishment, Miss Birks did not sacrifice comfort to any love of the antique. Inside the ancient walls everything was strictly modern and hygienic, with the latest patterns of desks, the most sanitary wall-papers, and each up-to-date appliance that educational authorities might suggest or devise. Could the Grey Nuns have but returned and taken a peep into the well-equipped little chemical laboratory, they would probably have fancied themselves in the chamber of a wizard in league with the fiends of darkness, and have crossed themselves in pious fear at the sight of the bottles and retorts; the nicely-fitted gymnasium would have puzzled them sorely; and a hockey match have aroused their sincerest horror. Tempora mutantur, nos et mutamur in illis—"the times are changed, and we are changed with them!" Though we have lost something of the picturesqueness of mediaeval life, the childlike faith of a childlike age, the simplicity of a nation only groping to feel its strength, we have surely gained in the long years of growth, in the gradual awakening to the thousand things undreamt of by our forefathers, and can justly deem that our lasses have inherited a golden harvest of thought and experience from those who have trod before them the thorny and difficult pathway that leads to knowledge.

Such were the picturesque and highly-appreciated surroundings at the Dower House, and now a word on that much more important subject, the girls themselves.

Miss Birks only received twenty pupils, all over fourteen years of age, therefore there was no division into upper and lower school. Five elder girls constituted the Sixth, and the rest were placed according to their capabilities in two sections of the Fifth Form. Of these Vb was considerably the larger, and containing, as it did, the younger, cruder, and more-boisterous spirits, was, in the opinion of the mistresses, the portion which required the finer tact and the greater amount of careful management. It was not that its members gave any special trouble, but they were somewhat in the position of novices, not yet thoroughly versed in the traditions of the little community, and needing skill and patience during the process of their initiation. Almost insensibly the nine seemed to split up into separate parties. Romola Harvey, Barbara Marshall, and Elyned Hughes lived in the same town, and knew each other at home; a sufficient bond of union to knit them in a close friendship which they were unwilling to share with anybody else. The news from Springfield, their native place, formed their chief subject of interest, and those who could not understand or discuss it must necessarily be in the position of outsiders. Evie Bennett, Annie Pridwell, and Betty Scott were lively, high-spirited girls, so full of irrepressible fun that they were apt to drop the deeper element out of life altogether. It was difficult ever to find them in a serious mood, their jokes were incessant, and they certainly well earned the nickname of "the three gigglers" which was generally bestowed upon them.

Until Christmas, Deirdre Sullivan and Dulcie Wilcox had rejoiced in the possession of a bedroom to themselves, a circumstance which had allowed them the opportunity of cultivating their friendship till they had become the most exclusive chums in the whole of the school. Deirdre, the elder by six months, was a picturesque, rather interesting-looking girl, with beautiful, expressive grey eyes, a delicate colour, and a neat, slim little figure. Dulcie, on the contrary, much to her mortification, was inclined to stoutness. She resembled a painting by Rubens, for her plump cheeks were pink as carnations, and her ruddy hair was of that warm shade of Venetian red so beloved by the old masters. It was a sore point with poor Dulcie that, however badly her head ached, or however limp or indisposed she might feel, her high colour never faded, and no pathetic hollows ever appeared in her cheeks.

"I get no sympathy when I'm ill," she confided to Deirdre. "On that day when I turned faint in the algebra class, Miss Harding had said only an hour before: 'You do look well, child!' I wish I were as pale and thin as Elyned Hughes, then I might get petted and excused lessons. As it is, no one believes me when I complain."

Dulcie, who possessed an intense admiration for her chum, struggled perpetually to mould herself on Deirdre's model, sometimes with rather comical results. Deirdre's romantic tendencies caused her to affect the particular style of the heroine of nearly every fresh book she read, and she changed continually from an air of reserved and stately dignity to one of sparkling vivacity, according to her latest favourite in fiction. With Deirdre it was an easy matter enough to assume a manner; but Dulcie, who merely copied her friend slavishly, often aroused mirth in the schoolroom by her extraordinary poses.

"Who is it now, Dulcie?" the girls would ask. "Rebecca of York, or the Scarlet Pimpernel? You might drop us a hint, so that we could tell, and treat you accordingly."

And Dulcie, being an unimaginative and really rather obtuse little person, though she knew she was being laughed at, could never quite fathom the reason why, and continued to lisp or drawl, or to attempt to look dignified, or to sparkle, with a praiseworthy perseverance worthy of a better object.