Book excerpt: The Delaware and Raritan Canal connected the Chesapeake Bay with New England ports, allowing a wide variety of vessels to use the waterway and avoid the treacherous Atlantic Ocean. The unusual machinery of the canal--locks, swing bridges, aqueducts, spill gates--is depicted in detail in The Delaware and Raritan Canal at Work. The book focuses on many of the businesses that operated along the canal, including farms, food-packing companies, rubber-reclaiming plants, coal yards, quarries, Johnson & Johnson, and Atlantic Terra Cotta. It includes scenic views along this famous waterway, one of the most successful towpath canals in the United States.