Zoom by too fast on Biscayne Boulevard and you might mistake Morningside Antiques for a small house. And it certainly was once upon a time. Now it's an intimate antique mall featuring a series of rooms that act as booths run by different dealers. Wander through leisurely and you're sure to come upon treasures: tasteful midcentury modern marvels that seem as if they were dropped here from outer space, prim and proper Victoriana, swanky Art Deco delights, rustic French provincial furniture and decorative arts, swinging Sixties and Seventies lamps and the like, tiny silver spoons, un-PC Black Americana, colorful printed linens, and sparkling trinkets galore. So what if the Baroque mahogany rocking chair you bought looks a little odd with the boomerang Formica coffee table in your living room? Tell the friends about to commit you that your style is eclectic -- not schizophrenic.