Art: Intensifications of Nature

Flora and fauna animate the works of two American sculptors

The exhibition of recent sculpture by the American artist Nancy Graves, on view at the Knoedler gallery in New York City through March 29, is her best yet—the work of an artist who, in midcareer, is only now getting into full and impressive stride. To say that Graves, 43, in the cliché of artspeak, is "involved with organic imagery" does no justice to the depth of her entry into the natural world as subject. When so much in current art tends to be either narcissistic...