We provide a quantitative macrohistory of the evolution and coevolution of three fundamental elements of English caselaw: property, contract, and procedure. Our dataset is derived from a
comprehensive corpus of reports on pre-1765 English court cases. Leveraging existing topic-model estimates, we construct annual time series of attention to each of the three legal
domains and estimate a structural VAR. Property and procedure are affected for decades by their own shocks. Procedure and property coevolve. In contrast, contract adjusts quickly to its own