THIS WEEK IN New York is your last chance to see two exhibits which seem separated by uptown and down, east and west – even a century, but both get at exploration and money, art and life. They’re meditations on living, home and things – things in particular and what gives an object power. In one the artist achieves this with a small intervention in a fancy Upper East Side townhouse; in the other an artist squats in a fancy Chelsea gallery. Uptown on 70th between Park and Madison is a gothic revival townhouse that once belonged to Stephen Clark, heir to the Singer Sewing Machine fortune and whose father built the Dakota. Decked out with timbers and gables and hand-painted stained glass looted (perhaps) from medieval England, the home is adorned with many stuffed dead things. Those stuffed dead things are not Clark’s doing; they belong to the Explorers Club, the home’s current occupant. On the ground floor a yellowing polar bear stands on its hind legs, captured (or, at least, taxidermied) in some mode of attack.