Abstract
Historical geographers may profitably analyse process, and related form evolution, as one principal research method. The frequent emphasis placed on static analysis of past forms and on the subsequent interpretation of process is unfortunate. It is desirable to investigate process explicitly and to deduce forms from such analyses. Such a method is in accord with current developments in history and economic history. Historical geographers have much to contribute on both methodological and empirical levels. The use of counterfactuals is urged as one means of understanding form evolution.