"The Mouth of the Apponigansett" by Robert Swain Gifford is a print depicting the tidal estuary where the Apponigansett River meets the ocean in Massachusetts. Gifford, a 19th century American landscape artist, was known for his detailed atmospheric studies and coastal scenes rendered with fine tonal gradations. This work exemplifies his technical mastery of the print medium and his romantic sensibility toward New England's natural topography.