we know that ozma and glinda will be absent from oz for three days, leaving the country and the emerald city unprotected by their magic arts. we know that those people who have in recent years come from the great outside world to live in oz, were not inhabitants of oz when lurline made it a fairyland. thus they are not protected by the enchantment she cast on us. it will be simple for us to assume the shapes of these people of course they are mere mortals " the queen added with a sneer, "but even so they will serve our purpose."