rvoir and that would be acounterpoint to the surrounding city. This marsh was human construct dug outof polluted mudflats but it was designed to appear like a natural salt marsharound which the city had happened to grow. Time and chang process and purposeare expressed by its shape-a bowl with an irregular edge-and the pattern ofplants-bands of grasses and shrubs variably tolerant of fluctuating waterlevels even when riverflow was low its form recalled that it was designedto receive.Olmsteds imitation of nature represents a divergence from the then prevailingpastoral and formal styles both of which were domesticated landscapes andabstractions of nature. The fens and the Riverway in their time representeda new aesthetic for the urban districts which grew up around them ofsufficient scale to.