Impressionists on Paper is a bitty ramble of a show, despite some drop dead masterpieces. Its title betrays its lack of purpose. Impressionists! On paper! For as the curators assume we all know, the French artists who shocked conservative taste in the 1870s are renowned as painter’s painters. They put their easels in the open air and caught the changing light. Yet here they draw. But that’s not a revelation at all. Renoir’s drawings of women are just as bland as his paintings.