Written in a clear and graceful style and first published in 1930, this classic work describes the principles of genealogical research, the evaluation of evidence, and the relationship of genealogy to chronology, eugenics, and the law; it discusses early nomenclature, royal ancestry, the use of source material, and the methods of compiling a family history. It is, in short, the very foundation of scientific American genealogy -- a manifesto of methods, aims, and principles.