Two decades ago in an important essay, Martin V. Melosi, a pioneer in urban environmental history, defined the field's proper focus: how "the physical features and resources of urban sites (and regions) influence and are shaped by natural forces, growth, spatial change and development, and human action. Thus the field combines the study of the natural history of the city with the history of city building and their possible intersections." 2 The collection of books reviewed here demonstrates that these themes remain critically important and are still being revisited and revised. David Stradling's The Nature of New York illustrates the interactive growth of the nation's largest metropolis within the context of its larger state and region, while Zachary J. S. Falck's Weeds creatively analyzes the persistence of nature and natural history (i.e., weeds) in the cities. While by no means tired in their interpretations, these two studies remain perhaps most tied to traditional urban environmental history as defined above-that is, as reciprocal studies of physical forces and cities.Melosi also diagnosed the weaknesses of urban environmental history: it remained unintegrated in environmental history, which marginalized city spaces; it was undertheorized, especially regarding sociological and geographical theories; and it was narrowly empirical and focused on how cities functioned but not how they grew within the larger framework of the natural world. 3 To the extent that Melosi offered these shortcomings as a prospectus to future scholars, this collection of recent books bears out his hopes. Dorceta E. Taylor's The Environment and the People in American Cities, 1600s-1900s, deploys a series of sociological theories on the at MOUNT ALLISON UNIV on June 16, 2015 juh.sagepub.com Downloaded from