Entertaining and distinctly unusual. An elderly scientist gathers three strays under his wing, adopts them, and leaves them with a niece and a family servant and presumably ample funds while he goes off on an expedition. He disappears -- the funds run low -- the oddly assorted little family take boarders and new fields open up. One of the boarders installs all three children in the school of the ballet, as groundwork for helping support themselves and their benefactor, should he reappear. The eldest and the youngest take to it like ducks to water; the middle one yearns for a career as a flier. Details of the training, acting, dancing, pantomime, languages -- ballet in the English tradition. A good job, with enough and not too much of the vocational slant, and originality and charm.