New York: Whittlesey House / McGraw-Hill, (1951) dj. Hardcover first edition - A book for younger children written and illustrated by this prolific author. this book is an example of her goals - as she commented "One part of the job I set for myself is to make those young readers see that everything is connected to everything - that science isn't something apart. It's a part of everyday life. The things the earliest scientists learned were the building blocks for those who came after. . . I want to involve readers directly in the text so they will ask themselves questions and try to answer them." Illustrated on every page in both color or brown ink drawings. Foreword by Glenn O. Blough Slightly oversized format.