Read it through once

The dinner was a somewhat formidable business. Dining with the van der Luydens was at best no light matter, and dining there with a Duke who was their cousin was almost a religious solemnity. It pleased Archer to think that only an old New Yorker could perceive the shade of difference (to New York) between being merely a Duke and being the van der Luydens' Duke. New York took stray noblemen calmly, and even (except in the Struthers set) with a certain distrustful hauteur; but when they presented such credentials as these they were received with an old-fashioned cordiality that they would have been greatly mistaken in ascribing solely to their standing in Debrett. It was for just such distinctions that the young man cherished his old New York even while he smiled at it.