The book surveys the legal and social institutions of ancient Babylonia and Assyria, presenting laws, contracts, and letters that illuminate courts, family law, property, trade, slavery, and temple functions. It treats major codifications alongside earlier and later legal materials and explains judicial processes, criminal and public rights, inheritance, marriage, divorce, adoption, and the status of widows and children. Commercial practice receives detailed attention in chapters on sales, loans, pledges, wages, leases, partnerships, and accounting, with discussion of land tenure and obligations for personal service. A final section analyzes private and official correspondence and the difficulties of interpreting fragmentary cuneiform documents, with practical appendices on chronology and measures.