Rosemary interrupted him. "But is that really Mary North?" She was regarding a woman sauntering in their direction followed by a small group who behaved as if they were accustomed to being looked at. When they were ten feet away, Mary's glance flickered fractionally over the Divers, one of those unfortunate glances that indicate to the glanced-upon that they have been observed but are to be overlooked, the sort of glance that neither the Divers nor Rosemary Hoyt had ever permitted themselves to throw at any one in their lives. Dick was amused when Mary perceived Rosemary, changed her plans and came over. She spoke to Nicole with pleasant heartiness,nodded unsmilingly to Dick as if he were somewhat contagious--whereupon he bowed in ironic respect--as she greeted Rosemary.