By the author of and Toads, Owls, etc., these two titles inaugurate a new series with a change of format and an approach to even younger readers. Pages of bold colorful diagrams by Herschel Wartik alternate with a page of easy reading text in large type, then a page of double column text which is more difficult and enlarges on the explanations previously given. In What's Inside of Me? the first page shows a picture of a boy, and on the next he is dissected and there are lungs, heart and stomach in enough detail to be informative and not too much to puzzle. And the what's inside' frame of reference provide the necessary facts about the organs and systems and their attendant functions. What's Inside of Plants talks about plants in general, leaves, stems, roots, flowers, fruits, seeds, and the ways in which plants grow. His illustrations from familiar plants provide recognition value as well as an easy classification of types from root to flower to fruit...As science primers, these should find an enduring spot in the market.