Bridging The GapOl' Will Shakespeare said it centuries ago: ''Crabbed age and youth cannot live together.'' Maybe not. But they can incorporate.

Somewhere in the middle of New York City, in a small art auction house, there's a crack in the foundation. Even the best building inspector on the block wouldn't find the crack in the walls of Swann Galleries, because the crack is a chasm. A gap, really. A generation gap.

And the entrepreneurs are the foundation. Nicholas and George Lowry own Swann Galleries. Nicholas is 32; his dad, George, is 69. Sometimes they disagree on how to run their business. "Whenever there's an age gap between business owners, there are points of contention," says Nicholas.