Today we welcome a guest post from Jason W. Smith, author of To Master the Boundless Sea: The U.S. Navy, the Marine Environment, and the Cartography of Empire, just published by UNC Press in our Flows, Migrations, and Exchanges series. As the United States grew into an empire in the late nineteenth century, notions like “sea power” derived not only from fleets, bases, and decisive battles but also from a scientific effort to understand and master the ocean environment. Beginning in the early nineteenth century and concluding in the first years of the twentieth, Jason...