change dresses! Then if Poppie tries to follow you, it will throw her off the scent. Mine's longer than yours, too, so it will be better for a stewardess."
"Won't they notice it in school? It might give the thing away," hesitated Gipsy.
"It's Drawing the whole afternoon with Mr. Cobb, and he won't know the difference. Quick, or somebody may be coming! Take my hat too. I'll get yours out of the cupboard, or go home without one. None of the girls would tell, and I'll dodge mistresses."
It did not take very long for the pair to effect an exchange of costumes. They were soon arrayed in each other's dresses, an arrangement which was certainly more to Gipsy's advantage than Meg's. They knew there was no time to be lost, so, swinging themselves over the balcony railings, they began creeping cautiously down the greenhouse roof. They had just about reached the middle when Meg, who was first, suddenly stopped with a stifled exclamation, and lay as flat and as still as she could. Gipsy naturally followed suit, and looking downwards saw the reason for the alarm. They were in horrible and imminent danger of discovery. Miss Poppleton herself had entered the conservatory below, and with a little watering can in her hand began to attend to her plants. Would she look up and notice the two dark bodies on the roof above her?
Gipsy felt she had never been so thrillingly interested in gardening in the whole of her life. She watched while the geraniums and fuchsias received their due sprinkling, and held her breath when the Principal appeared about to stretch up to a hanging
