The purpose behind this toy book is to teach small children to button and unbutton. There's not enough variety, however, in the problems involved, and the project lacks appeal. (Not as successful as the shoe lacing book, for instance.) The story concerns a little boy and his toy dog, which has a red button for a nose. The button is lost and the small boy chases it through the story to final success. The pictures are in color- burlesqued figures, in off focus now and again, but with lots of action. Cheap but novel; a sturdier book for youngsters than the clock book.