As one of the "founding fathers" of American natural history Jean Louis Rodolphe Agassiz (1807-73) made major contributions to 19th-century geology, palaeontology and zoology. "Bibliographia Zoologie", first published in 1838-54 by the Ray Society, is a monumental study of natural history, containing a comprehensive listing of books and articles relating to zoology and biology. Hugh Edwin Strickland (1811-53), a British naturalist, played a large part in the editing and publication of this significant work and added more than a third of new materials to the original manuscript. Also containing a guide to scientific periodicals and to the publications of natural history societies and institutions, this four-volume work is a bibliography tool for historians of zoology and geology and all scholars of the history of science.