Founded in 1914, the Department of Embryology at the Carnegie Institution of Washington has made a great contribution to the biological understanding of embryos and their development. Although originally much of the research was carried out through experimental embryology, by the second half of the twentieth century, tissue and cell cultures were providing histological information about development, and biochemistry and molecular genetics dominated research. This is the final volume in a series of five histories of the Carnegie Institution of Washington.

Preface; Introduction Jane Maienschein; 1. The human embryo collection at the Department of Embryology of the Carnegie Institution of Washington Adrianne Noe; 2. How rhesus monkeys became laboratory animals Elizabeth Hanson; 3. Reproductive science at the Carnegie Department of Embryology, 1913-71 Adele E. Clarke; 4. The Lewis films: tissue culture and 'living anatomy' at the Department of Embryology, 1919-40 Hannah Landecker; 5. Heredity, development and evolution at the Carnegie Insitution of Washington Garland E. Allen; 6. The Department of Embryology in the second half of the twentieth century Donald D. Brown; 7. Looking ahead Allan Spradling.