Gr 9 Up-The introduction in each title provides an overview of the discipline and how the 10 scientists profiled fit into its history. The biographical sketches-Georgius Agricola, Alexander von Humboldt, Stephen Jay Gould, etc. (Earth); and William Beebe, Henry Bigelow, and Eugene Clark, etc. (Marine)-cover the individual's childhood, education, scientific pursuits, and memorable contributions. Black-and-white photographs and line drawings offer welcome visual representations of scientific concepts. Sidebars elucidate more complex related topics and pertinent personalities. Section headings on almost every page will guide researchers of various reading abilities, and the uncluttered layouts complement the straightforward if occasionally uninspired texts. Chapters conclude with a chronology and a well-rounded list of further readings that contains scholarly reference volumes, standard young adult biographies, and Web sites. Each book closes with an extensive glossary and fully annotated resources. These volumes provide in-depth looks at the achievements of individuals who might be featured only briefly in reference sets such as Richard Olson's Biographical Encyclopedia of Scientists (Marshall Cavendish, 1997) and Scientists: Their Lives and Works (Gale, 2002).-Amy Pickett, Ridley High School, Folsom, PA Copyright 2006 Reed Business Information.