Anne Alexander whose ABC of Cars and Trucks was a Junior Literary Guild selection, seizes in her second book upon a theme of immediate fascination to children -- the ability to whistle. In a refreshingly syncopated rhyme narrative ""I"" confesses his envy of all the lucky whistlers: the policeman, the newsboy, skyrockets, peanut carts, they all whistle, but poor little ""I"", try as he does, cannot whistle. Abner Graboff's illustrations are correspondingly whimsical, though their colors are somewhat drab. A good introduction to the cadence of language and a successful treatment of the essential theme of frustration, effort, and ultimate success.