In New York in the fall, making my way through the reorganized back rooms of 19^th century European art at the Metropolitan Museum, I was pleased by two landscape recoveries.  Wonderful oil sketches by Constable that used to hang scattered in obscurity, somewhere past the Corots, have been hung together, with prominence.  And three Daubignys, for many years unviewable, now hang in a row, constituting a quiet assertion, long missing at the museum, that this is a painter worth contemplating.     Constable and Daubigny are tied together in various ways.  An important exhibition [...] more