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In August of 2007, the editorial team noticed a number of manuscripts about water technologies coming over the transom in just a few months.

Then more manuscripts arrived. Our instinct—that the serendipity represented by this uncoordinated and unplanned influx of articles is an especially telling one—is borne out both by the thematic insights found in this collection of articles and by the encouraging scholarly trends in the history of technology that the July issue demonstrates in microcosm.