It was not at all an easy matter for Miss Aubrey to choose a suitable subject for a large class. The girls were at different stages of ability, and the beginners must not be sacrificed to the cleverer few. While Katrine, Gladwin, and perhaps Diana could manage a sketch of trees, hayfield, or reedy river, the others demanded something more palpable in the way of drawing. A cottage, where you could reproduce the lines of roof, door, windows, and chimney, was far easier than a misty impression of sky and foliage. But where there were cottages there were nearly always children to stand and stare, so again Miss Aubrey found herself in a difficulty. She solved it by taking her class to sketch a picturesque, tumble-down little farm, about a mile and a half away from Heathwell, where, for a marvel, not even a solitary specimen of childhood resided. The mistress of the place was an attraction in herself. She had established a considerable reputation in the neighbourhood as a herb doctor, preparing various nauseous and ill-smelling brews for sick cows or horses, or for human sprained ankles, bad legs, toothaches, headaches, or other ailments. She charmed warts and cured agues, and was even held by many to be somewhat of a witch. She was credited with the evil eye, and awestruck neighbours told dark tales of terrible misfortunes having befallen those who were unfortunate or rash enough to cross her will. As it is rare in this twentieth century to meet anybody with even the shadow of a reputation for the black arts, the girls were thrilled at the accounts they heard, and much disappointed that the old dame never vouchsafed them an exhibition of her talents. One day she invited them to enter, and they persuaded her to explain to them the various treasures that adorned her parlour. Certainly the collection was unique. Two stuffed cocks stood on the window seat, each covered with an antimacassar, whether to preserve them, or merely to display the crochet work of which an example adorned every chair, it was impossible to decide; while a third chanticleer on the mantelpiece was generally used as a stand for the good woman's best bonnet. They had no doubt been fine birds in their time, and had won never-to-be-forgotten prizes at a local show, but their present value as ornaments was a matter of opinion. A marvellous sampler representing the Tabernacle in the Wilderness hung over the sideboard; carefully worked flames were depicted rising from the altar, and two cherubim with black beads for eyes and white Berlin-wool wings hovered at either corner, a few sizes too large for the building. On the mantelpiece lay two extraordinary objects which the girls at first took to be shells, but as they corresponded with no known specimen of conchology, inquiries were made.