PORTLAND, ORE.- For a limited timenow through January 31visitors to the Portland Art Museum will have a unique opportunity to view four major canvases by French Impressionist Claude Monet (1840 1926). The four paintings are hung in close proximity in the Museums Impressionist galleries and offer insight into the artists practice over three decades. Claude Monets Waterlilies (1914-15) is arguably the centerpiece of the Museums permanent collection and one of the most popular for visitors and members. Thanks to a loan from a private collection, visitors will also see Monets companion painting, Nymphéas (1914-1917), an oil painting of the same group of waterlilies in his beloved pond and garden at his home in Giverny, France. The paintings are installed near the Museums two other Monet paintings, River at Lavacourt (1879) and Le Chateau dAntibes (c. 1888), in the Jubitz Cen