First there was pop, then the trend setters opted for op, but as the new acquisitions show at Manhattan's Whitney Museum demonstrates, still another category is called for. Old-line Geometric Abstractionist Ad Reinhardt suggests "ob"from objectand it embraces any object, image of one, or whatsit that might amuse museum directors or titillate collectors. Examples of ob art offered at the Whitney include:
>Andy Warhol's drawing titled Bow Ties, which is precisely thatthe same bow tie repeated 61 times, with varying hues added.
> Yayoi Kusama's Air Mail Stickers, a collage made of 4,600...